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

Article abstract of DOI:10.1002/ejoc.200600034

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. KGaA, 2006.