Direct asymmetric aldol reactions between aldehydes and ketones catalyzed by l-tryptophan in the presence of water
作者:Zhaoqin Jiang、Hui Yang、Xiao Han、Jie Luo、Ming Wah Wong、Yixin Lu
DOI:10.1039/b921460g
日期:——
Primary amino acids and their derivatives were investigated as catalysts for the direct asymmetric aldol reactions between ketones and aldehydes in the presence of water, and L-tryptophan was shown to be the best catalyst. Solvent effects, substrate scope and the influence of water on the reactions were investigated. Quantum chemical calculations were performed to understand the origin of the observed
研究了伯氨基酸及其衍生物作为在水存在下酮与醛之间直接不对称醛醇缩合反应的催化剂,L-色氨酸是最好的催化剂。研究了溶剂效应,底物范围和水对反应的影响。进行量子化学计算以了解观察到的立体选择性的起源。