Vinylcyclopropane oxygenation. Anti diastereoselectivity through an unexpected transition-state geometry
摘要:
Ester-substituted vinylcyclopropanes react with molecular oxygen via a radical-mediated [3-atom + 2-atom] addition to form 1,2-dioxolanes with predominantly anti stereochemistry. The degree of anti stereoselectivity can be controlled by the electronic nature of the radical stabilizing substituent R.