Stereospecific Trans Radical Addition of DBr to the 2-Butenes Syntheses of Erythro- and Threo-3-Deutero-2-bromobutanes

摘要

Pure erythro- and threo-3-deutero-2-bromobutanes can be synthesized by radical chain additions of deuterium bromide to tran- and cis-2-butenes, respectively. Structures and purity were determined by alkaline dehydrohalogenation, erythro-yielding trans-2-butene and cis-2-deutero-2-butene. threo-yielding cis-2-butene and trans-2-deutero-2-butene. The mechanistic implications are considered.