Abstract
This review illustrates that oximes and their derivatives are valuable materials for the preparation of different classes of heterocyclic compounds. The main group of reactions included transition metal catalysed or transition metal-free cyclisation of unsaturated oximes. Using these starting materials pyrroles, isoxazoles, pyridines and isoquinolines were prepared. Some heterocyclic systems (for example, seven-membered rings) were obtained by the classical Beckmann rearrangement using novel reagents and conditions. Literature data published between January of 2014 and June of 2017 are included in this review.
Keywords: Oximes, heterocycles, three-membered heterocycles, pyrroles, oxadiazoles, pyridines, isoquinolines, seven-membered heterocycles.
Graphical Abstract
Call for Papers in Thematic Issues
Catalytic C-H bond activation as a tool for functionalization of heterocycles
The major topic is the functionalization of heterocycles through catalyzed C-H bond activation. The strategies based on C-H activation not only provide straightforward formation of C-C or C-X bonds but, more importantly, allow for the avoidance of pre-functionalization of one or two of the cross-coupling partners. The beneficial impact of ...read more
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