Chemistry Letters, Vol.34, No.3, 316-317, 2005
Stereoselective alpha-hydrazination of alpha,beta-unsaturated carboxylates catalyzed by manganese(III) complex with dialkylazodicarboxylate and phenylsilane
In the presence of a catalytic amount of bis(dipivaloylmethanato)manganese(III) complex, the alpha,beta-unsaturated carboxylates with camphorsultam as a chiral auxiliary reacted with phenylsilane and dialkyl azodicarboxylates to afford the corresponding alpha-hydrazinated carboxylates with high stereoselectivities.