Rh-Catalyzed Formation of Dioxolanes from α-Alkyl Diazoesters: Diastereoselective Cycloadditions of Carbonyl Ylides with Selectivity over β-Hydride Elimination
作者:Andrew DeAngelis、Patricia Panne、Glenn P. A. Yap、Joseph M. Fox
DOI:10.1021/jo702308f
日期:2008.2.1
Described here is a diastereoselective Rh-catalyzed method for the preparation of dioxolanes from α-alkyl-α-diazoesters. This represents the first general method for generating carbonylylides from α-diazoesters that possess β-hydrogens, as such diazo compounds typically give rise to alkenes via β-hydride elimination. Subsequent cycloaddition with aromatic aldehydes gives tetrasubstituted dioxolanes