Abstract
Some transformations are not possible with ground-state reactions even in the presence of a catalyst, hence they are performed under photochemical conditions. Electron transfer occurs even with the photochemical excitement of one molecule where redox reaction is not possible at the ground state. The side products are obtained from ground-state reactions. For C-C bond formation during photochemical reactions, there is no requirement of any chemical activation of the substrates. Therefore, these reactions are presented here for the synthesis of fused five-membered O-heterocycles in the context of sustainable processes from 1964 to 2019.
Keywords: Heterocycles, oxygen, photochemical, ring system, coumarins, dimethylfuran.
Graphical Abstract
[http://dx.doi.org/10.1021/cr0306790] [PMID: 15137807]
[http://dx.doi.org/10.2174/1570179043366611]
(b) Kaur, N.; Bhardwaj, P.; Devi, M.; Verma, Y.; Grewal, P. Photochemical reactions in five and six-membered polyheterocycles synthesis. Synth. Commun., 2019, 49, 2281-2318.
[http://dx.doi.org/10.1080/00397911.2019.1622732]
[http://dx.doi.org/10.1016/j.tet.2007.04.029]
(b) Kaur, N. Palladium-catalyzed approach to the synthesis of S-heterocycles. Catal. Rev., 2015, 57(4), 478-564.
[http://dx.doi.org/10.1080/01614940.2015.1082824]
(c) Kaur, N. Synthesis of six and seven-membered heterocycles under ultrasound irradiation. Synth. Commun., 2018, 48(11), 1235-1258.
[http://dx.doi.org/10.1080/00397911.2018.1434894]
(d) Kaur, N. Photochemical reactions as key steps in five-membered N-heterocycles synthesis. Synth. Commun., 2018, 48(11), 1259-1284.
[http://dx.doi.org/10.1080/00397911.2018.1443218]
(e) Kaur, N. Solid-phase synthesis of sulfur containing heterocycles. J. Sulfur Chem., 2018, 39(5), 544-577.
[http://dx.doi.org/10.1080/17415993.2018.1457673]
(f) Kaur, N. Ionic liquid: an efficient and recyclable medium for the synthesis of fused six-membered oxygen heterocycles. Synth. Commun., 2019, 49, 1679-1707.
[http://dx.doi.org/10.1080/00397911.2019.1568149]
(g) Kaur, N. Multiple nitrogen-containing heterocycles: metal and non-metal assisted synthesis. Synth. Commun., 2019, 49, 1633-1658.
[http://dx.doi.org/10.1080/00397911.2018.1542497]
(h) Kaur, N.; Grewal, P.; Bhardwaj, P.; Devi, M.; Verma, Y. Nickel-catalyzed synthesis of five-membered heterocycles. Synth. Commun., 2019, 49, 1543-1577.
[http://dx.doi.org/10.1080/00397911.2019.1594306]
(i) Kaur, N. Gold and silver assisted synthesis of five-membered oxygen and nitrogen containing heterocycles. Synth. Commun., 2019, 49, 1459- 1485.
[http://dx.doi.org/10.1080/00397911.2019.1575423]
(j) Kaur, N. Synthesis of six- and seven-membered and larger heterocylces using Au and Ag catalysts. Inorg. Nano. Met. Chem., 2018, 48, 541- 568.
[http://dx.doi.org/10.1080/24701556.2019.1567544]
(k) Kaur, N.; Verma, Y.; Grewal, P.; Bhardwaj, P.; Devi, M. Application of titanium catalysts for the syntheses of heterocycles. Synth. Commun., 2019, 49, 1847-1894.
[http://dx.doi.org/10.1080/00397911.2019.1606922]
[http://dx.doi.org/10.1016/j.inoche.2014.09.024]
(b) Kaur, N.; Kishore, D. Nitrogen-containing six-membered heterocycles: solid-phase synthesis. Synth. Commun., 2014, 44(9), 1173-1211.
[http://dx.doi.org/10.1080/00397911.2012.760129]
(c) Kaur, N.; Kishore, D. Solid-phase synthetic approach toward the synthesis of oxygen containing heterocycles. Synth. Commun., 2014, 44(8), 1019-1042.
[http://dx.doi.org/10.1080/00397911.2012.760131]
(d) Kaur, N. Microwave-assisted synthesis of five membered O-heterocycles. Synth. Commun., 2014, 44(24), 3483-3508.
[http://dx.doi.org/10.1080/00397911.2013.800213]
(e) Kaur, N. Microwave-assisted synthesis of five membered O,N-heterocycles. Synth. Commun., 2014, 44(24), 3509-3537.
[http://dx.doi.org/10.1080/00397911.2013.800214]
(f) Kaur, N. Microwave-assisted synthesis of five membered O,N,N-heterocycles. Synth. Commun., 2014, 44(22), 3229-3247.
[http://dx.doi.org/10.1080/00397911.2013.798666]
(g) Trost, B.M. The atom economy--a search for synthetic efficiency. Science, 1991, 254(5037), 1471-1477.
[http://dx.doi.org/10.1126/science.1962206] [PMID: 1962206]
(h) Kaur, N. Photochemical reactions for the synthesis of six-membered O-heterocycles. Curr. Org. Synth., 2018, 15, 298-320.
[http://dx.doi.org/10.2174/1570179414666171011160355]
(i) Kaur, N.; Tyagi, R.; Kishore, D. Expedient protocols for the installation of 1,5-benzoazepine based privileged templates on 2-position of α,β-enone incorporated derivatives of the 1,4-benzodiazepine nucleus linked through a phenoxyl spacer. J. Heterocycl. Chem., 2014, 51, E340-E343.
[http://dx.doi.org/10.1002/jhet.1924]
(j) Kaur, N.; Kishore, D. Synthesis of 2-(oxadiazolo, pyrimido, imidazolo, and benzimidazolo) substituted analogues of 1,4-benzodiazepin-5-carboxamides linked through a phenoxyl bridge. J. Chem. Sci., 2014, 126, 1861-1867.
[http://dx.doi.org/10.1007/s12039-014-0721-x]
(k) Kaur, N.; Kishore, D. Synthesis of oxadiazolo, pyrimido, imidazolo and benzimidazolo containing derivatives of 1,4-benzodiazepin-5-(4′-methylpiperazinyl)-carboxamide through phenylamino spacer. Synth. Commun., 2014, 44, 2789-2796.
[http://dx.doi.org/10.1080/00397911.2013.815215]
(l) Kaur, N.; Kishore, D. Application of chalcones in heterocycles synthesis: synthesis of 2-(isoxazolo, pyrazolo and pyrimido) substituted analogues of 1,4-benzodiazepin-5-carboxamides linked through an oxyphenyl bridge. J. Chem. Sci., 2013, 125, 555-560.
[http://dx.doi.org/10.1007/s12039-013-0412-z]
[http://dx.doi.org/10.1002/ange.19901021118]
(b) Kaur, N. Applications of palladium dibenzylideneacetone as catalyst in the synthesis of five-membered N-heterocycles. Synth. Commun., 2019, 49, 1205-1230.
[http://dx.doi.org/10.1080/00397911.2018.1540048]
(c) Kaur, N. Copper catalyzed synthesis of seven and higher-membered heterocycles. Synth. Commun., 2019, 49, 879-916.
[http://dx.doi.org/10.1080/00397911.2018.1543780]
(d) Kaur, N. Ionic liquid assisted synthesis of S-heterocycles. Phosphorus Sulfur Silicon Relat. Elem., 2019, 194, 165-185.
[http://dx.doi.org/10.1080/10426507.2018.1539492]
(e) Kaur, N. Nickel catalysis: six membered heterocycle syntheses. Synth. Commun., 2019, 49, 1103-1133.
[http://dx.doi.org/10.1080/00397911.2019.1568499]
(f) Kaur, N. Seven-membered N-heterocycles: metal and non-metal assisted synthesis. Synth. Commun., 2019, 49, 987-1030.
[http://dx.doi.org/10.1080/00397911.2019.1574351]
(g) Kaur, N.; Bhardwaj, P.; Devi, M.; Verma, Y.; Grewal, P. Synthesis of five-membered O,N-heterocycles using metal and non-metal. Synth. Commun., 2019, 49, 1345-1384.
[http://dx.doi.org/10.1080/00397911.2019.1594308]
(h) Kaur, N. Synthetic routes to seven and higher membered S-heterocycles by use of metal and nonmetal catalyzed reactions. Phosphorus Sulfur Silicon Relat. Elem., 2019, 194, 186-209.
[http://dx.doi.org/10.1080/10426507.2018.1539493]
(i)Kaur, N. Synthesis of six-membered N-heterocycles using ruthenium catalysts. Catal. Lett., 2019, 14, 1513-1539.
[http://dx.doi.org/10.1007/s10562-019-02746-2]
(j)Kaur, N. Gold catalysts in the synthesis of five-membered N-heterocycles. Curr. Organocatal., 2017, 4, 122-154.
[http://dx.doi.org/10.2174/2213337204666171103142349]
[http://dx.doi.org/10.1016/S0040-4020(98)00596-1]
(b) Kaur, N. Metal catalysts: applications in higher membered N-heterocycles synthesis. J. Iran. Chem. Soc., 2015, 12, 9-45.
[http://dx.doi.org/10.1007/s13738-014-0451-5]
(c) Kaur, N. Insight into microwave-assisted synthesis of benzo derivatives of five membered N,N-heterocycles. Synth. Commun., 2015, 45(11), 1269-1300.
[http://dx.doi.org/10.1080/00397911.2013.827725]
(d) Kaur, N. Synthesis of fused five-membered N,N-heterocycles using microwave irradiation. Synth. Commun., 2015, 45(12), 1379-1410.
[http://dx.doi.org/10.1080/00397911.2013.828078]
(e) Kaur, N. Microwave-assisted synthesis of seven membered S-heterocycles. Synth. Commun., 2014, 44(22), 3201-3228.
[http://dx.doi.org/10.1080/00397911.2013.798665]
(f) Kaur, N. Six membered N-heterocycles: microwave-assisted synthesis. Synth. Commun., 2015, 45(1), 1-34.
[http://dx.doi.org/10.1080/00397911.2013.813548]
(g) Kaur, N. Polycyclic six membered N-heterocycles: microwave-assisted synthesis. Synth. Commun., 2015, 45(1), 35-69.
[http://dx.doi.org/10.1080/00397911.2013.813549]
(h) Kaur, N. Ruthenium catalysis in six-membered O-heterocycles synthesis. Synth. Commun., 2018, 48, 1551-1587.
[http://dx.doi.org/10.1080/00397911.2018.1457698]
(i)Kaur, N. Green synthesis of three to five-membered O-heterocycles using ionic liquids. Synth. Commun., 2018, 48, 1588-1613.
[http://dx.doi.org/10.1080/00397911.2018.1458243]
(j)Kaur, N. Ultrasound-assisted green synthesis of five-membered O- and S-heterocycles. Synth. Commun., 2018, 48, 1715-1738.
[http://dx.doi.org/10.1080/00397911.2018.1460671]
(k)Kaur, N. Photochemical mediated reactions in five-membered O-heterocycles synthesis. Synth. Commun., 2018, 48(17), 2119-2149.
[http://dx.doi.org/10.1080/00397911.2018.1485165]
(l)Kaur, N. Application of silver-promoted reactions in the synthesis of five-membered O-heterocycles. Synth. Commun., 2019, 49, 743-789.
[http://dx.doi.org/10.1080/00397911.2019.1570525]
(m)Kaur, N. Synthesis of seven and higher-membered heterocycles using ruthenium catalysts. Synth. Commun., 2019, 49, 617-661.
[http://dx.doi.org/10.1080/00397911.2018.1555711]
[http://dx.doi.org/10.1002/jhet.2129]
(b) Kaur, N. Methods for metal and non-metal catalyzed synthesis of six-membered oxygen containing poly-heterocycles. Curr. Org. Synth., 2017, 14(4), 531-556.
[http://dx.doi.org/10.2174/1570179413666161021104941]
(c) Kaur, N. Photochemical reactions: synthesis of six-membered N-heterocycles. Curr. Org. Synth., 2017, 14(7), 972-998.
[http://dx.doi.org/10.2174/1570179414666170201150701]
(d) Kaur, N. Ionic liquids: promising but challenging solvents for the synthesis of N-heterocycles. Mini Rev. Org. Chem., 2017, 14(1), 3-23.
[http://dx.doi.org/10.2174/1570193X13666161019120050]
(e) Kaur, N. Metal catalysts for the formation of six-membered N-polyheterocycles. Synth. React. Inorg. Met.-Org. Nano-Met. Chem., 2016, 46(7), 983-1020.
[http://dx.doi.org/10.1080/15533174.2014.989620]
(f) Kaur, N. Applications of gold catalysts for the synthesis of five-membered O-heterocycles. Inorg. Nano-Met. Chem, 2017, 47(2), 163-187.
(g) Stach, H.; Hesse, M. Synthesis of macrocyclic compounds by ring enlargement. Tetrahedron, 1988, 44(6), 1573-1590.
[http://dx.doi.org/10.1016/S0040-4020(01)86717-X]
(h) Kaur, N. Copper catalysts in the synthesis of five-membered N-polyheterocycles. Curr. Org. Synth., 2018, 15, 940-971.
[http://dx.doi.org/10.2174/1570179415666180815144442]
(i)Kaur, N. Recent developments in the synthesis of nitrogen containing five-membered polyheterocycles using rhodium catalysts. Synth. Commun., 2018, 48, 2457-2474.
[http://dx.doi.org/10.1080/00397911.2018.1487070]
[http://dx.doi.org/10.1016/S0040-4020(01)96203-9]
[http://dx.doi.org/10.1021/cr00022a007]
[http://dx.doi.org/10.1039/b309592d]
(b) Kaur, N. Microwave-assisted synthesis: fused five membered N-heterocycles. Synth. Commun., 2015, 45(7), 789-823.
[http://dx.doi.org/10.1080/00397911.2013.824984]
(c) Kaur, N. Six membered heterocycles with three and four N-heteroatoms: microwave-assisted synthesis. Synth. Commun., 2015, 45(2), 151-172.
[http://dx.doi.org/10.1080/00397911.2013.813550]
(d) Kaur, N. Application of microwave-assisted synthesis in the synthesis of fused six-membered heterocycles with N-heteroatom. Synth. Commun., 2015, 45(2), 173-201.
[http://dx.doi.org/10.1080/00397911.2013.816734]
(e) Kaur, N. Microwave-assisted synthesis of fused polycyclic six membered N-heterocycles. Synth. Commun., 2015, 45(3), 273-299.
[http://dx.doi.org/10.1080/00397911.2013.816735]
(f) Kaur, N. Review of microwave-assisted synthesis of benzo fused six-membered N,N-heterocycles. Synth. Commun., 2015, 45(3), 300-330.
[http://dx.doi.org/10.1080/00397911.2013.816736]
(g) Kaur, N.; Kishore, D. Synthetic strategies applicable in the synthesis of privileged scaffold: 1,4-benzodiazepine. Synth. Commun., 2014, 44(10), 1375-1413.
[http://dx.doi.org/10.1080/00397911.2013.772202]
(h) Kaur, N. Mercury-catalyzed synthesis of heterocycles. Synth. Commun., 2018, 48, 2715-2749.
[http://dx.doi.org/10.1080/00397911.2018.1497657]
(i)Kaur, N. Photochemical irradiation: seven and higher membered O-heterocycles. Synth. Commun., 2018, 48, 2935-2964.
[http://dx.doi.org/10.1080/00397911.2018.1514051]
(j)Kaur, N. Synthesis of seven and higher membered nitrogen containing heterocycles using photochemical irradiation. Synth. Commun., 2018, 48, 2815-2849.
[http://dx.doi.org/10.1080/00397911.2018.1501488]
(k)Kaur, N. Ruthenium catalyzed synthesis of five-membered O-heterocycles. Inorg. Chem. Commun., 2018, 99, 82-107.
[http://dx.doi.org/10.1016/j.inoche.2018.11.011]
[http://dx.doi.org/10.1351/pac200072071321]
[http://dx.doi.org/10.1080/00397911.2013.825808]
(b) Kaur, N. Advances in microwave-assisted synthesis for five membered N-heterocycles synthesis. Synth. Commun., 2015, 45(4), 432-457.
[http://dx.doi.org/10.1080/00397911.2013.824982]
(c) Kaur, N. Microwave-assisted synthesis of five membered S-heterocycles. J. Iran. Chem. Soc., 2014, 11, 523-564.
[http://dx.doi.org/10.1007/s13738-013-0325-2]
(d) Kaur, N. Review on the synthesis of six membered N,N-heterocycles by microwave irradiation. Synth. Commun., 2015, 45(10), 1145-1182.
[http://dx.doi.org/10.1080/00397911.2013.827208]
(e) Kaur, N. Greener and expeditious synthesis of fused six-membered N,N-heterocycles using microwave irradiation. Synth. Commun., 2015, 45(13), 1493-1519.
[http://dx.doi.org/10.1080/00397911.2013.828236]
(f) Kaur, N. Applications of microwaves in the synthesis of polycyclic six membered N,N-heterocycles. Synth. Commun., 2015, 45(14), 1599-1631.
[http://dx.doi.org/10.1080/00397911.2013.828755]
(g) Kaur, N. Synthesis of five-membered N,N,N- and N,N,N,N-heterocyclic compounds: applications of microwaves. Synth. Commun., 2015, 45(15), 1711-1742.
[http://dx.doi.org/10.1080/00397911.2013.828756]
(h) Kaur, N. Cobalt-catalyzed C-N, C-O, C-S bond formation: Synthesis of heterocycles. J. Iran. Chem. Soc., 2019, 16, 2525-2553.
[http://dx.doi.org/10.1002/anie.200503908] [PMID: 16498692]
(i)Kaur, N. Palladium acetate and phosphine assisted synthesis of five-membered N-heterocycles. Synth. Commun., 2019, 49, 483-514.
[http://dx.doi.org/10.1080/00397911.2018.1536213]
[http://dx.doi.org/10.1002/anie.200400650] [PMID: 15455437]
[http://dx.doi.org/10.1016/S0040-4020(02)00516-1]
[http://dx.doi.org/10.1039/b107298f] [PMID: 14518182]
[http://dx.doi.org/10.1021/ar950256n]
(b) Kaur, N. Role of microwaves in the synthesis of fused five membered heterocycles with three N-heteroatoms. Synth. Commun., 2015, 45(4), 403-431.
[http://dx.doi.org/10.1080/00397911.2013.824981]
(c) Kaur, N. Recent impact of microwave-assisted synthesis on benzo derivatives of five membered N-heterocycles. Synth. Commun., 2015, 45(5), 539-568.
[http://dx.doi.org/10.1080/00397911.2013.824983]
(d) Kaur, N.; Kishore, D. Microwave-assisted synthesis of seven and higher membered N-heterocycles. Synth. Commun., 2014, 44(18), 2577-2614.
[http://dx.doi.org/10.1080/00397911.2013.783922]
(e) Kaur, N.; Kishore, D. Microwave-assisted synthesis of six-membered S-heterocycles. Synth. Commun., 2014, 44(18), 2615-2644.
[http://dx.doi.org/10.1080/00397911.2013.792354]
(f) Kaur, N.; Kishore, D. Microwave-assisted synthesis of seven and higher membered O-heterocycles. Synth. Commun., 2014, 44(19), 2739-2755.
[http://dx.doi.org/10.1080/00397911.2013.796382]
[http://dx.doi.org/10.1002/(SICI)1521-3773(20000103)39:1<44:AID-ANIE44>3.0.CO;2-L] [PMID: 10649349]
[http://dx.doi.org/10.1080/01614940.2014.976118]
(b) Kaur, N.; Kishore, D. Microwave-assisted synthesis of six membered O,O-heterocycles. Synth. Commun., 2014, 44(21), 3082-3111.
[http://dx.doi.org/10.1080/00397911.2013.796384]
(c) Kaur, N.; Kishore, D. Microwave-assisted synthesis of six membered O-heterocycles. Synth. Commun., 2014, 44(21), 3047-3081.
[http://dx.doi.org/10.1080/00397911.2013.796383]
(d) Wender, P.A.; Croatt, M.P.; Witulski, B. New reactions and step economy: the total synthesis of (+/-)-salsolene oxide based on the type II transition metal-catalyzed intramolecular [4+4] cycloaddition. Tetrahedron, 2006, 62, 7505-7511.
[http://dx.doi.org/10.1016/j.tet.2006.02.085]
[http://dx.doi.org/10.1021/ar700155p] [PMID: 18159936]
[http://dx.doi.org/10.1002/anie.200806086] [PMID: 19294720]
[http://dx.doi.org/10.3762/bjoc.8.229] [PMID: 23209538]
[http://dx.doi.org/10.1016/j.tet.2006.06.044]
[http://dx.doi.org/10.1021/cr00017a001]
[http://dx.doi.org/10.1021/cr00057a003]
[http://dx.doi.org/10.1021/cr00013a001]
[http://dx.doi.org/10.1039/a905409j]
[http://dx.doi.org/10.1002/1521-3773(20020902)41:17<3147:AID-ANIE3147>3.0.CO;2-V] [PMID: 12207376]
[http://dx.doi.org/10.1021/ja060968g] [PMID: 16734486]
[http://dx.doi.org/10.1021/ja0370140] [PMID: 14871123]
[http://dx.doi.org/10.1016/S0040-4039(00)01933-X]
[http://dx.doi.org/10.1021/jo001631e] [PMID: 11846645]
[http://dx.doi.org/10.1002/anie.198102051]
[http://dx.doi.org/10.3987/COM-02-9640]
[http://dx.doi.org/10.1039/b517008g] [PMID: 16493471]
[http://dx.doi.org/10.1021/ja010883+] [PMID: 11427077]
[http://dx.doi.org/10.1016/j.tetlet.2005.11.102]
[http://dx.doi.org/10.1021/cr0680336] [PMID: 18302419]
[http://dx.doi.org/10.1021/jo00219a022]
[http://dx.doi.org/10.1021/tx00043a002] [PMID: 7703361]
[http://dx.doi.org/10.1055/s-1998-1967]
[http://dx.doi.org/10.1039/a708365c]
[http://dx.doi.org/10.1002/hlca.200390051]
[http://dx.doi.org/10.1002/anie.200352171] [PMID: 14562360]
[http://dx.doi.org/10.1002/ejoc.200400551]
[http://dx.doi.org/10.1021/jo0515226] [PMID: 16292808]
[http://dx.doi.org/10.1039/B613985J] [PMID: 17308643]
[http://dx.doi.org/10.1021/jo7027129] [PMID: 18302416]
[http://dx.doi.org/10.1002/anie.200503908] [PMID: 16498692]
[http://dx.doi.org/10.1039/P19730002907]
[http://dx.doi.org/10.3987/S-1979-01-0477]
[http://dx.doi.org/10.1021/jm030357o] [PMID: 15163197]
[http://dx.doi.org/10.1016/j.tetlet.2010.05.119]
[http://dx.doi.org/10.3390/molecules16097522] [PMID: 21894087]
[http://dx.doi.org/10.1016/j.jphotochem.2008.05.024]
[http://dx.doi.org/10.1002/anie.200901603] [PMID: 19472260]
[http://dx.doi.org/10.1021/ja207480q] [PMID: 21955005]
[http://dx.doi.org/10.1007/978-3-662-04201-4]
[http://dx.doi.org/10.3987/COM-99-8715]
[http://dx.doi.org/10.1021/jo00239a046]
[http://dx.doi.org/10.1021/jo00311a008]
[http://dx.doi.org/10.1246/cl.2005.66]
[http://dx.doi.org/10.1246/bcsj.80.1157]
[http://dx.doi.org/10.1039/b808778d] [PMID: 18958317]
[http://dx.doi.org/10.1016/S0040-4039(01)80269-0]
[http://dx.doi.org/10.1021/ja01024a074]
[http://dx.doi.org/10.1021/jo00199a035]
[http://dx.doi.org/10.1021/jo00020a034]
[http://dx.doi.org/10.1021/acs.chemrev.6b00018] [PMID: 27109441]
[http://dx.doi.org/10.1021/ol401138q] [PMID: 23713968]
[http://dx.doi.org/10.1021/acs.joc.5b00714] [PMID: 25938658]
[http://dx.doi.org/10.1039/C4PP00452C] [PMID: 25597467]
[http://dx.doi.org/10.3987/COM-14-S(K)69]
[http://dx.doi.org/10.3987/COM-13-12876]
[http://dx.doi.org/10.3987/COM-06-10945]
[http://dx.doi.org/10.1021/cm049508h]
[http://dx.doi.org/10.1021/ol052711d] [PMID: 16468715]
[http://dx.doi.org/10.3987/COM-05-S(K)19]
[http://dx.doi.org/10.1038/nature03955] [PMID: 16121176]
[http://dx.doi.org/10.1016/j.tet.2003.09.060]
[http://dx.doi.org/10.1007/BF02704214]
[http://dx.doi.org/10.1351/pac198860070981]
[http://dx.doi.org/10.1002/chem.200306049] [PMID: 15112206]
[http://dx.doi.org/10.1021/cr050568w] [PMID: 17165693]
[http://dx.doi.org/10.3762/bjoc.7.196] [PMID: 22238545]
[http://dx.doi.org/10.1021/ol050103s] [PMID: 15816734]
[http://dx.doi.org/10.1021/ol052794y] [PMID: 16435867]
[http://dx.doi.org/10.1021/ja036587+] [PMID: 12952441]
[http://dx.doi.org/10.1016/j.tetlet.2005.01.133]
[http://dx.doi.org/10.1016/j.tetlet.2006.07.145]
[http://dx.doi.org/10.1016/j.tet.2005.06.013]
[http://dx.doi.org/10.1021/ar000113n] [PMID: 11170351]
[http://dx.doi.org/10.1021/acs.orglett.8b00611] [PMID: 29558148]
[http://dx.doi.org/10.1039/C8CC00787J] [PMID: 29701223]
[http://dx.doi.org/10.1021/ol102184u] [PMID: 20945889]
[http://dx.doi.org/10.1021/acs.joc.7b02910] [PMID: 29297689]
[http://dx.doi.org/10.3762/bjoc.7.61] [PMID: 21647263]
[http://dx.doi.org/10.1021/cr050545h] [PMID: 17165674]
[http://dx.doi.org/10.1021/ja906163s] [PMID: 20000565]
[http://dx.doi.org/10.1016/0040-4039(96)01740-6]
[http://dx.doi.org/10.1021/ja8083048] [PMID: 19140787]
[http://dx.doi.org/10.1021/ol902594b] [PMID: 20000335]
[http://dx.doi.org/10.1002/anie.201002845] [PMID: 21246702]
[http://dx.doi.org/10.1039/b807889k] [PMID: 18597025]
[http://dx.doi.org/10.1021/ol052071e] [PMID: 16288519]
[http://dx.doi.org/10.1021/ol0514496] [PMID: 16119944]
[http://dx.doi.org/10.1016/S0040-4039(00)87308-6]
[http://dx.doi.org/10.1016/S0040-4020(01)98812-X]
[http://dx.doi.org/10.1016/S0040-4020(01)87735-8]
[http://dx.doi.org/10.1055/s-1977-24271]
[http://dx.doi.org/10.1021/jo00441a032]
[http://dx.doi.org/10.1021/acs.joc.7b01678] [PMID: 28810741]
[http://dx.doi.org/10.1021/jo00394a025]
[http://dx.doi.org/10.1016/0040-4039(80)88117-2]
[http://dx.doi.org/10.1016/S0040-4020(01)91544-3]
[http://dx.doi.org/10.1016/S0040-4039(00)87380-3]
[http://dx.doi.org/10.1016/S0040-4039(98)00637-6]
[http://dx.doi.org/10.1016/S0040-4039(00)84394-4]
[http://dx.doi.org/10.1021/jo00384a057]
[http://dx.doi.org/10.1055/s-1982-29892]
[http://dx.doi.org/10.1021/jo00076a047]
[http://dx.doi.org/10.1021/ja00519a011]
[http://dx.doi.org/10.1021/ja0398464] [PMID: 14871089]
[http://dx.doi.org/10.1016/S0040-4020(01)90410-7]
[http://dx.doi.org/10.1021/ja00360a035]
[http://dx.doi.org/10.1021/ja00327a020]
[http://dx.doi.org/10.1016/S0040-4039(00)84588-8]
[http://dx.doi.org/10.1016/S0040-4039(00)82429-6]
[http://dx.doi.org/10.1021/jo00280a057]
[http://dx.doi.org/10.1016/j.tet.2010.09.078]
[http://dx.doi.org/10.1021/ja00335a056]
[http://dx.doi.org/10.1126/science.4038558] [PMID: 4038558]
[http://dx.doi.org/10.1021/ja011470b] [PMID: 11562234]
[http://dx.doi.org/10.1021/ar00039a002]
[http://dx.doi.org/10.1248/cpb.37.2379] [PMID: 2605681]
[http://dx.doi.org/10.1021/ja030191g] [PMID: 14624592]
[http://dx.doi.org/10.3390/molecules15063816] [PMID: 20657410]
[http://dx.doi.org/10.1021/ja990763q]
[http://dx.doi.org/10.3390/molecules18032942] [PMID: 23459304]
[http://dx.doi.org/10.1021/ja00165a033]
[http://dx.doi.org/10.1271/bbb.65.29] [PMID: 11272842]
[http://dx.doi.org/10.1002/anie.198508771]
[http://dx.doi.org/10.1002/anie.199104771]
[http://dx.doi.org/10.1016/S0040-4039(00)88139-3]
[http://dx.doi.org/10.1021/ja00039a077]
[http://dx.doi.org/10.1021/ja00061a014]
[http://dx.doi.org/10.1021/ja993013p]
[http://dx.doi.org/10.1021/ja001747s]
[http://dx.doi.org/10.1021/ja050064f] [PMID: 15771494]
[http://dx.doi.org/10.1021/jo001460d] [PMID: 11300918]
[http://dx.doi.org/10.1021/ol0530225] [PMID: 16494470]
[http://dx.doi.org/10.1021/jo301456y] [PMID: 22954380]
[http://dx.doi.org/10.1002/ejoc.201201332]
[http://dx.doi.org/10.1016/j.molstruc.2013.04.027]
[http://dx.doi.org/10.1039/c39930001681]
[http://dx.doi.org/10.1021/acs.orglett.6b02562] [PMID: 27676586]
[http://dx.doi.org/10.1351/pac199264121865]
[http://dx.doi.org/10.1016/S0065-2725(01)81011-4]
[http://dx.doi.org/10.1016/j.tetasy.2003.11.011]
[http://dx.doi.org/10.1021/ja048438c] [PMID: 15327281]
[http://dx.doi.org/10.1021/ja046115a] [PMID: 15339146]
[http://dx.doi.org/10.1021/ol0502230] [PMID: 15901141]
[http://dx.doi.org/10.1002/ejoc.200500077]
[http://dx.doi.org/10.1021/jo030292x] [PMID: 14987024]
[http://dx.doi.org/10.1002/jlac.1992199201184]
[http://dx.doi.org/10.1016/0040-4039(93)85100-B]
[http://dx.doi.org/10.1021/ar068148w] [PMID: 17256976]
[http://dx.doi.org/10.1021/cc100124q] [PMID: 20718465]
[http://dx.doi.org/10.1007/BF00620704]
[http://dx.doi.org/10.1007/BF00618559]
[http://dx.doi.org/10.1021/cr00089a006]
[http://dx.doi.org/10.1021/ol0344319] [PMID: 12735772]
[http://dx.doi.org/10.1016/j.tet.2007.03.158] [PMID: 17940591]
[http://dx.doi.org/10.1021/jo001089u] [PMID: 11149847]
[http://dx.doi.org/10.1016/S0008-6215(01)00250-6] [PMID: 11728395]
[http://dx.doi.org/10.1021/jo00019a020]
[http://dx.doi.org/10.1021/jo00030a022]
[http://dx.doi.org/10.1248/yakushi1947.99.11_1102]
[http://dx.doi.org/10.1021/ja01031a039]
[http://dx.doi.org/10.3762/bjoc.8.135] [PMID: 23019450]
[http://dx.doi.org/10.1248/yakushi1947.98.6_774] [PMID: 690814]
[http://dx.doi.org/10.1016/0378-5173(93)90166-D]
[http://dx.doi.org/10.1016/S0040-4039(00)78714-4]
[http://dx.doi.org/10.1021/ja00168a050]
[http://dx.doi.org/10.1021/jo00067a006]
[http://dx.doi.org/10.1002/chem.201502661] [PMID: 26395034]
[http://dx.doi.org/10.1016/S0040-4039(01)96579-7]
[http://dx.doi.org/10.1021/acs.accounts.6b00254] [PMID: 27551740]
[http://dx.doi.org/10.1021/jo00092a018]
[http://dx.doi.org/10.1021/ja00782a049]
[http://dx.doi.org/10.1021/ja00454a044]
[http://dx.doi.org/10.1016/0040-4039(95)01828-6]
[http://dx.doi.org/10.1021/ja00782a047]
[http://dx.doi.org/10.1021/ja00057a053]
[http://dx.doi.org/10.1021/ja01059a059]
[http://dx.doi.org/10.1021/ja01033a025]
[http://dx.doi.org/10.1139/v70-038]
[http://dx.doi.org/10.1021/ja00782a048]
[http://dx.doi.org/10.1021/ja00266a050]
[http://dx.doi.org/10.1039/C7GC02261A]
[http://dx.doi.org/10.1002/hlca.200590200]
[http://dx.doi.org/10.1016/j.jphotochem.2005.03.027]
[http://dx.doi.org/10.1021/ol800806a] [PMID: 18597474]