Chemoselective Intramolecular Carbonyl Ylide Formation through Electronically Differentiated Malonate Diesters
datasetposted on 04.12.2015, 00:00 authored by Mina C. Nakhla, Che-Wah Lee, John L. Wood
A method for chemoselective carbonyl ylide formation utilizing the Rh(II) catalyzed decomposition of electronically differentiated diazo malonates is disclosed. Treatment of ethyl, trifluoro ethyl diazo malonate with a Rh(II) catalyst selectively forms a carbonyl ylide from the relatively electron rich ethyl ester. This carbonyl ylide can be trapped by various alkynes giving highly functionalized oxabicyclic compounds in a chemo-, regio-, and diastereoselective fashion.