A facile synthesis of homochiral 1-norbornanecarboxylic acids and 1-norbornanecarbonitriles
摘要:
A general method for the preparation of the title compounds from naturally occurring homochiral 2-norbornanones is presented. The key step is the Tf(2)O induced Wagner-Meerwein rearrangement of the corresponding cyanohydrins.
A facile synthesis of homochiral 1-norbornanecarboxylic acids and 1-norbornanecarbonitriles
摘要:
A general method for the preparation of the title compounds from naturally occurring homochiral 2-norbornanones is presented. The key step is the Tf(2)O induced Wagner-Meerwein rearrangement of the corresponding cyanohydrins.
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