Differentiation of diastereotopic bromine atoms in SN2 reactions of gem-dibromides
作者:Niels Münster、Klaus Harms、Ulrich Koert
DOI:10.1039/c2cc17599a
日期:——
A novel directed S(N)2 reaction of conformationally biased gem-dibromides and an arenesulfinate anion is described. The reaction results in the diastereoselective formation of alpha-bromosulfones. The selectivity originates from pre-coordination of the nucleophile to a free hydroxyl group in the gamma-position.
描述了构象偏向的宝石二溴化物和芳烃亚磺酸盐阴离子的新型定向S(N)2反应。该反应导致非对映选择性地形成α-溴砜。选择性源自亲核体与γ-位的游离羟基的预配位。