Lewis Base Catalyzed Enantioselective Additions of an N-Silyl Vinylketene Imine
作者:Scott E. Denmark、Tyler W. Wilson
DOI:10.1002/anie.201108795
日期:2012.3.26
Outside the limits: In the title reaction the nucleophile 1 represents a synthetic equivalent of nucleophilic allylic nitriles and addresses some of the current limitations associated with reactions of allylic nitrile anions. Unsaturated nitriles containing a trisubstituteddouble bond are obtained in high yield, with excellent site selectivity and good to excellent stereoselectivity (see scheme; LDA=lithium