Highly efficient and stereoselective cycloaddition of nitrones to indolyl- and pyrrolylacrylates
作者:Viktor A. Dmitriev、Mariia M. Efremova、Alexander S. Novikov、Vladimir V. Zarubaev、Alexander V. Slita、Anastasia V. Galochkina、Galina L. Starova、Andrey V. Ivanov、Alexander P. Molchanov
DOI:10.1016/j.tetlet.2018.04.066
日期:2018.6
The reactions of various nitrones with indolyl- and pyrrolylacrylates proceeds regioselectively with high diastereoselectivity in the case of aldonitrones, and represents an effective method for obtaining new indolyl- and pyrrolyl-substituted isoxazolidine carboxylates stabilized by weak (CH⋯O) and moderate (NH⋯N) strength intramolecular hydrogen bonding. The resulting cycloadducts exhibit promising
Regio- and stereoselectivity of cycloaddition of C-amidonitrones to esters of methylenecyclopropanedicarboxylic acids
作者:A. P. Molchanov、Tran Q. Tung、R. R. Kostikov
DOI:10.1134/s1070428011020187
日期:2011.2
C-Amidonitrones add regio- and stereoselectively to esters of 3-methylenecyclopropane-1,2-dicarboxylic, 2-(diphenylmethylene)cyclopropane-1,1-dicarboxylic, and 2-(1-phenylethylidene)cyclopropane-1,1-dicarboxylic acids to form a single diastereomer of 4-spirocyclopropaneisoxazolidines.