The role of the C(2) configuration and methyl substitution on the catalytic activity of novel 2,3,3- and 2,7,7-trimethyl-substituted γ-aminonorbornan-2-ols
作者:Antonio García Martínez、Enrique Teso Vilar、Amelia García Fraile、Santiago de la Moya Cerero、Paloma Martínez Ruiz、Cristina Díaz Morillo
DOI:10.1002/chir.20837
日期:——
7‐trimethyl‐substituted γ‐aminonorbornan‐2‐ols have been obtained from 2‐methylenenorbornane‐1‐carbonitriles derived from (+)‐camphor and (−)‐fenchone and probed as chiral ligands for the enantioselective addition of diethylzinc to benzaldehyde. This has allowed the study of the structural factors influencing the chirality transfer, such as variation of the relative configuration at C(2) and steric
从(+)-樟脑和(- -fenchone并作为手性配体进行探测,用于将二乙基锌对映体选择性地添加到苯甲醛中。这使人们能够研究影响手性转移的结构因素,例如降冰片烷在C(2)处的相对构型的变化和C(2),C(3)和C(7)处的位阻,导致遵守了γ-氨基降冰片聚糖2 exo中的二甲基位置所起的重要作用-ols。在能量有利的非对映体Noyori样过渡态的基础上,对获得的实验结果进行了经验合理化。手性2010。©2010 Wiley-Liss,Inc.。