Six-membered cyclic sulfamidates are prepared in high yields by treatment of allenic sulfamates with readily available Ph3PAuNTf2. The reaction enables formation of N-substituted quaternary centres in high yields. The relative stereochemistry has been unambiguously determined. A π-rearrangement is faster than hydroamination in the case of an allyl-substituted sulfamate and a mechanism is proposed for
通过用容易获得的Ph 3 PAuNTf 2处理烯丙基
氨基磺酸盐,可以高收率制备六元环状
氨基磺酸盐。该反应能够以高收率形成N-取代的季中心。相对立体
化学已经明确确定。在烯丙基取代的
氨基磺酸酯的情况下,π重排比氢化
氨基化更快,并且提出了用于该方法的机理。