A new synthesis of pyrrolidines via imino-aldol reaction of (2-trimethylsilylmethyl)cyclopropyl ketones with imines
作者:Veejendra K. Yadav、Archana Gupta
DOI:10.1016/j.tetlet.2008.03.117
日期:2008.5
A newsynthesis of 2,3,5-trisubstituted pyrrolidines from the imino-aldols formed from Lewis acid-mediated reactions of (2-trimethylsilylmethyl)cyclopropylketones with benzylimines is described. The ring closure of the imino-aldols formed from the benzylimines of 2-chloro-, 2-fluoro-, and 2-trifluoromethylbenzaldehydes proceeds with predominantly 2,5-anti selectivity to generate the corresponding
The cleavage of 1-amino-2′-nitrobenzylphosphonates in a basic medium. Formation of the 3-amino-2,1-benzisoxazole derivatives
作者:Bogdan Boduszek、Agnieszka Halama、Jerzy Zoń
DOI:10.1016/s0040-4020(97)00721-7
日期:1997.8
bond cleavage, with formation of 3-amino-2,1-benzisoxazole derivatives (3). The leaving phosphorus moiety was identified here as phosphoric acid. In the case of basic hydrolysis of corresponding esters, new cyclic phosphorus compounds (derivatives of benzoxazaphosphorin-3,1,2 Pv-one-2) were obtained. The cyclic products were formed as a result of the subsequent reaction of anthranil derivatives with