Silylative Kinetic Resolution of Racemic 1-Indanol Derivatives Catalyzed by Chiral Guanidine
作者:Shuhei Yoshimatsu、Akira Yamada、Kenya Nakata
DOI:10.1021/acs.joc.7b02493
日期:2018.1.5
Efficient kinetic resolution of racemic 1-indanol derivatives was achieved using triphenylchlorosilane by asymmetric silylation in the presence of chiral guanidine catalysts. The chiral guanidine catalyst (R,R)-N-(1-(β-naphthyl)ethyl)benzoguanidine was found to be highly efficient as only 0.5 mol % catalyst loading was sufficient to catalyze the reaction of various substrates with appropriate conversion
使用三苯基氯硅烷通过在手性胍催化剂存在下的不对称甲硅烷基化反应,可以实现外消旋1-茚满醇衍生物的高效动力学拆分。发现手性胍催化剂(R,R)-N-(1-(β-萘基)乙基)苯并胍是高效的,因为仅0.5mol%的催化剂负载量足以以适当的转化率和高的催化率来催化各种底物的反应。s值(最多89个)。该催化剂体系已成功应用于具有高选择性的外消旋1-茚满醇的克级甲硅烷基化动力学拆分。