Highly Selective Sulfoxidation of Allylic and Vinylic Sulfides by Hydrogen Peroxide Using a Flavin as Catalyst
作者:Auri A. Lindén、Lars Krüger、Jan-E. Bäckvall
DOI:10.1021/jo034273z
日期:2003.7.1
sulfone was detected). No epoxidation of double bonds or interference with other functional groups was observed under the reaction conditions. The general applicability was demonstrated by the selective oxidation of various allylic and vinylic sulfides having different electronic properties. A number of functionalities including hydroxy, acetoxy, amino, silyloxy, and formyl groups are tolerated under these
使用黄素1作为氧化催化剂,过氧化氢作为末端氧化剂,已开发出烯丙基和乙烯基硫化物高度化学选择性氧化为相应的亚砜的方法。即使使用过量的氧化剂,也可以以高选择性的方式以良好的产率至优异的产率形成亚砜。砜的形成被完全抑制到<0.5%(在一种情况下,检测到1.5%的砜)。在反应条件下未观察到双键的环氧化或与其他官能团的干扰。通过对具有不同电子特性的各种烯丙基和乙烯基硫化物进行选择性氧化,证明了其普遍适用性。在这些温和的反应条件下,可以耐受许多官能团,包括羟基,乙酰氧基,氨基,甲硅烷基氧基和甲酰基。