作者:Fraser F. Fleming、Wang Liu、Somraj Ghosh、Omar W. Steward
DOI:10.1021/jo702681e
日期:2008.4.1
accounts for comparable ester alkylations affording the opposite diastereomer! The intensive survey of metalated nitrile alkylations identifies the key structural features required for high 1,2-asymmetricinduction, addresses the long-standing challenge of asymmetric alkylations with acylic metalated nitriles, and provides a versatile method for installing hindered quaternary centers with excellent stereocontrol