High threo diastereoselectivity via europium(III)-catalyzed cyclocondensation of a silyloxy diene with .alpha.-alkoxy aldehydes. Synthesis of (-)pestalotin
Polymer-supported electron-rich diene for hetero Diels–Alder reactions
作者:Camille Pierres、Pascal George、Luc van Hijfte、Jean-Bernard Ducep、Marcel Hibert、André Mann
DOI:10.1016/s0040-4039(03)00712-3
日期:2003.4
A Brassard diene analogue was grafted on a modified Merrifield resin and u sed in a hetero Diels-Alder reaction with various aldehydes or ketones. The reaction gave access to 6-substituted 5,6-dihydropyrones (5a-u). This new immobilized electron-rich diene is more stable than the corresponding native diene, and is a versatile supported reagent. (C) 2003 Elsevier Science Ltd. All rights reserved.
AYOUB M. T.; SHANDALA M. Y.; BASHI G. M. G.; PELTER A., J. CHEM. SOC. PERKIN TRANS., PART 1, 1981, NO 3, 697-699
作者:AYOUB M. T.、 SHANDALA M. Y.、 BASHI G. M. G.、 PELTER A.