Chinese Journal of Catalysis ›› 2018, Vol. 39 ›› Issue (7): 1194-1201.DOI: 10.1016/S1872-2067(18)63095-5

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Photocatalytic hydrogen-evolution dimerization of styrenes to synthesize 1,2-dihydro-1-arylnaphthalene derivatives using Acr+-Mes and cobaloxime catalysts

Wenxiao Caoa,b, Chengjuan Wua, Tao Leia, Xiulong Yanga, Bin Chena,b, Chenho Tunga,b, Lizhu Wua,b   

  1. a Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;
    b University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2018-04-20 Revised:2018-04-27 Online:2018-07-18 Published:2018-06-07
  • Contact: 10.1016/S1872-2067(18)63095-5
  • Supported by:

    This work was supported by the Ministry of Science and Technology of China (2014CB239402, 2017YFA0206903), the National Natural Science foundation of China (21390404), the Strategic Priority Research Program of the Chinese Academy of Science (XDB17000000), the Key Research Pro-gram of Frontier Sciences, the Chinese Academy of Sciences (QYZDY-SSW-JSC029).

Abstract:

We report a hydrogen-evolution dimerization of styrenes via the synergistic merger of Acr+-Mes photocatalyst and cobaloxime proton reduction catalysts. By utilizing this dual catalyst system, 1,2-dihydro-1-arylnaphthalene derivatives can be directly constructed from commercially available styrenes. Our reaction proceeds smoothly under mild conditions without the need for oxidants or hydrogen atom transfer reagents, and the sole byproduct is hydrogen gas. Mechanistic investigation suggests that the reaction is initiated by photoinduced electron transfer under visible-light irradiation.

Key words: Hydrogen-evolution dimerization, Styrenes, 1,2-Dihydro-1-arylnaphthalene derivatives, Photocatalysis, Cobaloxime catalysts