Gold Catalysts Can Generate Nitrone Intermediates from a Nitrosoarene/Alkene Mixture, Enabling Two Distinct Catalytic Reactions: A Nitroso-Activated Cycloheptatriene/Benzylidene Rearrangement
作者:Sayaji Arjun More、Rahul Dadabhau Kardile、Tung-Chun Kuo、Mu-Jeng Cheng、Rai-Shung Liu
DOI:10.1021/acs.orglett.1c01857
日期:2021.7.16
Gold-catalyzed reactions of cycloheptatrienes with nitrosoarenes yield nitrone derivatives efficiently. This reaction sequence enables us to develop gold-catalyzed aerobic oxidations of cycloheptatrienes to afford benzaldehyde derivatives using CuCl and nitrosoarenes as co-catalysts (10–30 mol %). Our density functional theory calculations support a novel nitroso-activated rearrangement, tropylium
环庚三烯与亚硝基芳烃的金催化反应可有效地产生硝酮衍生物。该反应序列使我们能够开发金催化的环庚三烯有氧氧化,以使用 CuCl 和亚硝基芳烃作为助催化剂(10-30 mol%)提供苯甲醛衍生物。我们的密度泛函理论计算支持一种新的亚硝基活化重排,tropylium → 亚苄基。使用相同的亚硝基芳烃,我们在亚硝基苯和两个烯醇醚之间开发了金催化的 [2 + 2 + 1]-环化,以使用 1,4-环己二烯作为氢供体产生 5-烷氧基异恶唑烷。