Asymmetric Synthesis of Di- and Trisubstituted Cyclopropanes through an Intramolecular Ring Closure
作者:Jeffrey Kallemeyn、Mathew Mulhern、Yi-Yin Ku
DOI:10.1055/s-0030-1259535
日期:2011.3
An asymmetric synthesis of di- and trisubstituted cyclopropanes proceeding through an intramolecular ringclosure of activated chiral benzyl alcohols has been developed. The chiral alcohol intermediates are obtained from asymmetric reduction of readily available 1,4-keto esters and undergo a one-pot activation and ringclosure to provide the ester-functionalized cyclopropanes in high enantio- and diastereomeric