作者:Machiko Ono、Takeru Ehara、Hirofumi Yokoyama、Nobuyoshi Ohtani、Youko Hoshino、Hiroyuki Akita
DOI:10.1248/cpb.53.1259
日期:——
The solvolysis reaction of (4,5)-anti-4-aryl-5-tosyloxy-2(E)-hexenoates 4a-k gave (4,5)-anti-4-aryl-5-hydroxy-2(E)-hexenoates 2a-k and (4,5)-anti-5-aryl-4-hydroxy-2(E)-hexenoates 5a-k along with the complete inversion. This 1,2-aryl migration was induced by treatment with heating in water-saturated nitromethane. On the basis of the substituent effect on the aromatic ring, this 1,2-aryl migration is
(4,5)-抗-4-芳基-5-甲苯磺酰氧基-2(E)-己酸酯4a-k的溶剂分解反应得到(4,5)-抗-4-芳基-5-羟基-2(E) -己烯酸酯2a-k和(4,5)-抗-5-芳基-4-羟基-2(E)-己烯酸酯5a-k以及完全反转。通过在水饱和的硝基甲烷中加热处理来诱导这种1,2-芳基迁移。基于对芳环的取代基作用,认为这种1,2-芳基迁移是通过σ桥的离子进行的。发现在2a-k和5a-k之间的产物选择性由底物4a-k的芳环中的取代基和取代图案巧妙地控制。