1,3-carbanionische umlagerungen: Reaktionen von phosphorsäure-o-haloarylestern mit metallen zu arylphosphonsäurederivaten
作者:J. Heinicke、I. Böhle、A. Tzschach
DOI:10.1016/s0022-328x(00)99340-9
日期:1986.12
o-Bromoaryl esters of phosphoric acid react with magnesium to give arene phosphonic acid derivatives via intermediate Grignard compounds. Similar metallation rearrangement processes may be achieved in the case of o-chloroaryl esters if sodium is applied as metal. 2,4-Dibromoaryl esters are attacked by magnesium regiospecifically in o-position.
磷酸的邻溴代芳基酯与镁反应,通过中间体格利雅(Grignard)化合物生成芳烃膦酸衍生物。如果将钠用作金属,则在邻氯芳基酯的情况下可以实现类似的金属化重排过程。2,4- Dibromoaryl酯是通过镁区域专一在攻击Ò位上。