Catalytic Oxidative Domino Degradation of Alkyl Phenols Towards 2- and 3-Substituted Muconolactones
作者:Mirosław Giurg、Ewa Kowal、Hubert Muchalski、Ludwik Syper、Jacek Młochowski
DOI:10.1080/00397910802369687
日期:2008.12.31
Abstract The catalytic oxidative domino degradation of phenols was investigated. Hydrogen peroxide (30% aq.) was used as an oxidant and 2,2′-dinitro-4,4′-ditrifluoromethyldiphenyl diselenide 4e as a catalyst. The products were muconic acid 5, and muconolactones muconolactones—5-carboxymethylfuran-2(5H)-ones 7 and 9. Phenols with alkyl groups at 2 or 4 positions of the benzene ring were converted regioselectively
摘要 研究了苯酚的催化氧化多米诺降解。过氧化氢(30%水溶液)用作氧化剂,2,2'-二硝基-4,4'-二三氟甲基二苯基二硒化物4e用作催化剂。产物为粘康酸5和粘康酸内酯-5-羧甲基呋喃-2(5H)-酮7和9。苯环2或4位具有烷基的苯酚被区域选择性地转化为相应的亚烯基环碳原子取代的粘康内酯. 提出了反应机理。