烯烃加成-光温和条件

发布时间:2018-07-10 14:10

Hydrofunctionalization of olefins to value-added chemicals via photocatalytic coupling†

Yonghui Fan,a,b Shenggang Li,a,c Jingxian Bao,a,b Lei Shi, a,b Yanzhang Yang,a,d Fei

Yu,a,d Peng Gao,a Hui Wang,a Liangshu Zhong,*,a,c and Yuhan Sun*,a,c

a Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced

Research Institute, Chinese Academy of Sciences, Shanghai 201203, China

b Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China

c School of physical Science and Technology, ShanghaiTech University, Shanghai 201210, China

d University of the Chinese Academy of Sciences, Beijing 100049, China


Abstract

A green strategy was developed for the synthesis of various value-added chemicals using methanol, acetonitrile, acetic acid, acetone and ethyl acetate as the hydrogen source by coupling them with olefins over heterogeneous photocatalysts. A radical coupling mechanism was proposed for the hydrofunctionalization of olefins with methanol to higher aliphatic alcohols over the Pt/TiO2 catalyst as the model reaction. C–H bond cleavage and C–C bond formation between photogenerated radicals and terminal olefins were accomplished in a single reaction at high efficiency. Our approach is atomically economical with high anti-Markovnikov regioselectivity and promising application potential under mild reaction conditions.



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