Stereoselective Reactions. XXXII. Enantioselective Deprotonation of 4-tert-Butylcyclohexanone by Fluorine-Containing Chiral Lithium Amides Derived from 1-Phenylethylamine and 1-(1-Naphthyl)ethylamine.
作者:Kazumasa AOKI、Kenji KOGA
DOI:10.1248/cpb.48.571
日期:——
examined using 1-phenylethylamine- and 1-(1-naphthyl)ethylamine-derived chiral lithium amides having an alkyl or a fluoroalkyl substituent at the amide nitrogen. The lithium amides having a 2,2,2-trifluoroethyl group on the amide nitrogen are easily accessible in both enantiomeric forms, and were found to induce good enantioselectivity in the present reaction.
使用衍生自在酰胺氮上具有烷基或氟代烷基取代基的1-苯基乙胺和1-(1-萘基)乙胺衍生的手性锂酰胺,研究了4-叔丁基环己酮的对映选择性去质子化。酰胺氮上具有2,2,2-三氟乙基的氨基酰胺很容易以两种对映体形式进入,并且发现在本反应中诱导了良好的对映选择性。