Sulfamic Acid: An Efficient Catalyst for the Diastereoselective, One-Pot Synthesis of Pyrano Benzopyrans, Furano Benzopyrans and Ethoxy Benzopyrans

R.   S.   Kumar; R.      Nagarajan; K.      Vijay; P.   T.   Perumal

doi:10.2174/1570178054405841

Abstract

Sulfamic acid catalyses the one-pot three components coupling of aldehydes, anilines and electron rich dienophiles such as dihydropyran, dihydrofuran and ethyl vinylether resulting in the formation of pyrano, furano and ethoxy benzopyrans.

Keywords: sulfamic acid, three- component coupling, diastereoselective, pyranobenzopyran, furanobenzopyran

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Letters in Organic Chemistry

Title: Sulfamic Acid: An Efficient Catalyst for the Diastereoselective, One-Pot Synthesis of Pyrano Benzopyrans, Furano Benzopyrans and Ethoxy Benzopyrans

Volume: 2 Issue: 5

Author(s): R. S. Kumar, R. Nagarajan, K. Vijay and P. T. Perumal

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Keywords: sulfamic acid, three- component coupling, diastereoselective, pyranobenzopyran, furanobenzopyran

Abstract: Sulfamic acid catalyses the one-pot three components coupling of aldehydes, anilines and electron rich dienophiles such as dihydropyran, dihydrofuran and ethyl vinylether resulting in the formation of pyrano, furano and ethoxy benzopyrans.

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Kumar S. R., Nagarajan R., Vijay K. and Perumal T. P., Sulfamic Acid: An Efficient Catalyst for the Diastereoselective, One-Pot Synthesis of Pyrano Benzopyrans, Furano Benzopyrans and Ethoxy Benzopyrans, Letters in Organic Chemistry 2005; 2 (5) . https://dx.doi.org/10.2174/1570178054405841