Synthesis of stilbene analogues by one-pot oxidation-Wittig and oxidation-Wittig–Heck reaction
作者:Akeel S. Saiyed、Krupa N. Patel、Bola V. Kamath、Ashutosh V. Bedekar
DOI:10.1016/j.tetlet.2012.06.090
日期:2012.8
Synthesis of symmetrical (and unsymmetrical) stilbene derivatives is achieved by a combination of one-pot steps of Kornblum type oxidation of benzyl halide, its simultaneous in situ formation of phosphonium salt, and subsequently their Wittig reaction. In other variant it is oxidized to aldehyde, treated with ylide generated from phosphonium salt (CH3PPh3X) to give styrene, and subjected to Pd catalyzed
对称(和不对称)二苯乙烯衍生物的合成是通过将一锅法的Kornblum型苄基卤化物氧化,同时同时原位形成phospho盐以及随后的Wittig反应相结合来实现的。在另一变体中,将其氧化成醛,用由salt盐(CH 3 PPh 3 X)产生的内鎓盐处理以得到苯乙烯,并与芳基卤化物进行Pd催化的Heck反应,以三步一锅法得到丁苯二酚。