A Mild Stereo- and Enantiospecific Conversion of 2,3-Diaryl-Substituted Oxiranes into 2,2-Dimethyl-1,3-Dioxolanes by an Acetone/Amberlyst 15 System
作者:Arlette Solladié-Cavallo、Elias Choucair、Milan Balaz、Paolo Lupattelli、Carlo Bonini、Nadia Di Blasio
DOI:10.1002/ejoc.200600034
日期:2006.7
Amberlyst 15 is an efficient catalyst for the reaction of aryl-substituted oxiranes with acetone to prepare 2,2-dimethyl-1,3-dioxolanes in high yields. trans-2,3-Diaryloxiranes afford trans-acetonides enantiospecifically at room temperature, and the use of enantiopure 2,3-diaryloxiranes results in no loss of stereochemical integrity in the resulting trans-acetonides. (© Wiley-VCH Verlag GmbH & Co.
Amberlyst 15 是芳基取代的环氧乙烷与丙酮反应以高产率制备 2,2-二甲基-1,3-二氧戊环的有效催化剂。反式-2,3-二芳基环氧乙烷在室温下对映特异性地提供反式丙酮化物,使用对映纯的2,3-二芳基环氧乙烷不会导致所得反式丙酮化物的立体化学完整性损失。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)