Regio and stereochemically controlled ring opening of epoxides with grignard reagents. Stereocontrolled synthesis of the steroid side chains. first stereoselective hemisynthesis of 20s isolanosterol.
作者:J.R. Schauder、A. Krief
DOI:10.1016/s0040-4039(00)85609-9
日期:1982.1
Title compound was efficiently prepared taking advantage of a stereoselective hydride shift during the reaction between the Grignard reagent derived from ethoxyacetylene and an epoxide. The solvent was found to have a crucial role in this and related reactions.