2010-59-5Relevant academic research and scientific papers
Preparation method of dichloro addition product of aromatic olefin under visible light catalysis
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Paragraph 0070-0073, (2020/06/30)
The invention relates to a preparation method of a dichloro addition product of aromatic olefin under visible light catalysis. The preparation method comprises the following step: by taking aromatic olefin as a substrate and copper chloride with visible light absorption capability as a chlorine source, reacting in an organic solvent under the irradiation of visible light in an inert atmosphere toobtain a dichloro addition product of the aromatic olefin after the reaction is completed. The aromatic olefin comprises a carbon-carbon double bond and an aryl group connected with the carbon-carbondouble bond through a covalent bond. Visible light is used for providing energy required by the reaction, copper chloride with visible light absorption capacity and a reaction substrate are used for photoinduction of chlorine atom transfer and initiation of an addition reaction to obtain a dichloro addition product, and the method is mild in reaction condition, simple and convenient to operate andwide in universality of the reaction substrate.
Visible-Light-Induced Vicinal Dichlorination of Alkenes through LMCT Excitation of CuCl2
Li, Jingjing,Lian, Pengcheng,Long, Wenhao,Wan, Xiaobing,Zheng, Yonggao
supporting information, p. 23603 - 23608 (2020/10/29)
This work demonstrates photoredox vicinal dichlorination of alkenes, based on the homolysis of CuCl2 in response to irradiation with visible light. This catalysis proceeds via a ligand to metal charge transfer process and provides an exciting opportunity for the synthesis of 1,2-dichloride compounds using an inexpensive, low-molecular-weight chlorine source. This new process exhibits a wide substrate scope, excellent functional group tolerance, extraordinarily mild conditions and does not require external ligands. Mechanistic studies show that the ready formation of chlorine atom radicals is responsible for the facile formation of C?Cl bonds in this synthetic process.
