Rhodium(II)-Catalyzed Decomposition of β,γ-Unsaturated Diazo Compounds
作者:Shahrokh Motallebi、Paul Müller
DOI:10.1002/hlca.19930760806
日期:1993.12.15
The RhII-catalyzed decomposition of β,γ-unsaturated diazo ketones 1 in the presence of MeOH leads via vinylogous Wolff rearrangement to γ,δ-unsaturated esters 6 (Schemes 1 and 2). A modest asymmetric induction is achieved when the reaction is carried out with chiral tetrakis(pyrrolidinecarboxylato)- or tetrakis(oxazolidinonato)dirhodium(II) complexes. Vinyl and phenyl diazoacetates 11 and 20, respectively