The exo-selectivity of the new non-natural chiral auxiliary (+)-(1R,endo)-2-benzonorbornenol in an asymmetric aza-Diels–Alder reaction
作者:F FERNANDEZ、X GARCIAMERA、J RODRIGUEZBORGES、M VALE
DOI:10.1016/s0040-4039(02)02599-6
日期:2003.1.13
The recently reported compound (+)-(1 R,endo)-2-benzonorbornenol (2) proved to be an efficient chiral auxiliary in the asymmetric aza-Diels-Alder reaction between cyclopentadiene and the N-benzyl imine of its glyoxylate, which afforded a virtually all-exo mixture of cycloaducts with a ISAR diastereomeric ratio of 63:37. (C) 2002 Elsevier Science Ltd. All rights reserved.