On the scope, mechanism and stereochemistry of the Lewis acid catalyzed cyclocondensation of activated dienes with aldehydes: an application to the erythronolide problem
Mechanistic variations in the Lewis acid-catalyzed cyclocondensation of siloxydienes with aldehydes
作者:Eric R. Larson、Samuel Danishefsky
DOI:10.1021/ja00387a056
日期:1982.11
DANISHEFSKY, S. J.;LARSON, E.;ASKIN, D.;KATO, NOBUO, J. AMER. CHEM. SOC., 1985, 107, N 5, 1246-1255
作者:DANISHEFSKY, S. J.、LARSON, E.、ASKIN, D.、KATO, NOBUO
DOI:——
日期:——
Diastereo- and Enantioselective Synthesis oftrans-2,3-Disubstituted 2,3-Dihydropyran-4-one Derivatives
作者:Arrigo Scettri、Maria R. Acocella、Laura Palombi、Chiara Scalera、Rosaria Villano、Antonio Massa
DOI:10.1002/adsc.200606159
日期:2006.10
aldehydes with a derivative of Danishefsky’s diene afforded the corresponding pyrones with high yields and diastereoselectivity upon activating SiCl4 with suitable neutral Lewis bases. Aldol intermediates deriving from a Mukaiyama-type pathway were isolated in many cases. The employment of a chiral activator allowed us to convert Danishefsky’s diene (or its disubstituted derivative) into both aldols