Semi-heterogeneous photocatalysis has emerged as a powerful and productive platform in organic chemistry,which provides mild and eco-friendly conditions for a diverse range of bond-forming reactions.The synergy of hom...Semi-heterogeneous photocatalysis has emerged as a powerful and productive platform in organic chemistry,which provides mild and eco-friendly conditions for a diverse range of bond-forming reactions.The synergy of homogeneous catalysts and heterogeneous catalysts inherits their main advantages,such as higher activities,easy separation and superior recyclability.In this review,we summarize the recent advances in recyclable semi-heterogenous protocols for the light promoted bond-forming reactions and identify directions for future research according to the different photocatalysts/metal/redox catalysts involved.Notably,this review is not a comprehensive description of reported literature but aim to highlight and illustrate key concepts,strategies,reaction model,reaction conditions and mechanisms.展开更多
Herein,a series of carbazolyl cyanobenzene(CCB)-based organic photocatalysts with a broad range of photoredox capabilities were designed and synthesized,allowing precise control of the photocatalytic reactivity for th...Herein,a series of carbazolyl cyanobenzene(CCB)-based organic photocatalysts with a broad range of photoredox capabilities were designed and synthesized,allowing precise control of the photocatalytic reactivity for the controllable reduction of aryl halides via a metal-free process.The screened-out CCB(5CzBN),a metal-free,low-cost,scalable and sustainable photocatalyst with both strong oxidative and reductive ability,exhibits superior performance for both dehalogenation and C—C bond-forming arylation reactions.展开更多
An interesting and recyclable activated carbon/water catalytic system for efficient synthesis of pyrrolo[1,2-a]quinoxaline derivatives was developed. The intramolecular C-N and C-C bond can be easily constructed in wa...An interesting and recyclable activated carbon/water catalytic system for efficient synthesis of pyrrolo[1,2-a]quinoxaline derivatives was developed. The intramolecular C-N and C-C bond can be easily constructed in water under mild condition. This reaction features a broad substrate scope, a good tolerance to water and air, metal-free, additive-free and redox reagent-free.展开更多
文摘Semi-heterogeneous photocatalysis has emerged as a powerful and productive platform in organic chemistry,which provides mild and eco-friendly conditions for a diverse range of bond-forming reactions.The synergy of homogeneous catalysts and heterogeneous catalysts inherits their main advantages,such as higher activities,easy separation and superior recyclability.In this review,we summarize the recent advances in recyclable semi-heterogenous protocols for the light promoted bond-forming reactions and identify directions for future research according to the different photocatalysts/metal/redox catalysts involved.Notably,this review is not a comprehensive description of reported literature but aim to highlight and illustrate key concepts,strategies,reaction model,reaction conditions and mechanisms.
基金the National Natural Scie nce Foundation of China(No.21972094)Guangdong Special Support Program+2 种基金Pengcheng Scholar programShenzhen Peacock Plan(Nos.KQJSCX20170727100802505,KQTD2016053112042971)the Educational Commission of Guangdong Province(No.2016KTSCX126)。
文摘Herein,a series of carbazolyl cyanobenzene(CCB)-based organic photocatalysts with a broad range of photoredox capabilities were designed and synthesized,allowing precise control of the photocatalytic reactivity for the controllable reduction of aryl halides via a metal-free process.The screened-out CCB(5CzBN),a metal-free,low-cost,scalable and sustainable photocatalyst with both strong oxidative and reductive ability,exhibits superior performance for both dehalogenation and C—C bond-forming arylation reactions.
基金the financial support from the National Natural Science Foundation of China (Nos. 21432009, 21672200, 21472177, 21772185 and 21801233)for the assistance of the product characterization from the Chemistry Experiment Teaching Center of University of Science and Technology of Chinasupported by the Strategic Priority Research Program of the Chinese Academy of Sciences (No. XDB20000000)
文摘An interesting and recyclable activated carbon/water catalytic system for efficient synthesis of pyrrolo[1,2-a]quinoxaline derivatives was developed. The intramolecular C-N and C-C bond can be easily constructed in water under mild condition. This reaction features a broad substrate scope, a good tolerance to water and air, metal-free, additive-free and redox reagent-free.
