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CuI catalyzed synthesis of Dibenzo[b,f]imidazo[1,2-d][1,4]thiazepines via C–N and C–S bond Ullmann cross-coupling reaction
- Li, Zhuo-Huan, Li, Tuan-Jie, Liu, Jian-Quan, Wang, Xiang-Shan
- Tetrahedron 2020 v.76 no.7 pp. 130915
- catalytic activity, chemical bonding, chemical structure, cross-coupling reactions, potassium carbonate, thiols
- The Ullmann cross-coupling reaction between 2-(2-bromophenyl)-4,5-diphenyl-1H-imidazole and 2-bromobenzenethiol occurred to give 2,3-diaryldibenzo[b,f]imidazo[1,2-d] [1,4]thiazepines in good yields. Two new bonds of Csp²-N and Csp²-S were built under the same catalytic system of CuI/o-phen in the presence of K₂CO₃.