Copper- and Palladium-Catalyzed Cross-Coupling Reactions for the Synthesis of N‑Fused Benzo[4,5]imidazo[2,1‑b]thiazole Derivatives via Substituted trans-1,2-Diiodoalkenes, 1H‑Benzo[d]imidazole-2-thiols, and Halobenzenes
journal contributionposted on 16.03.2017 by Guodong Shen, Bingchuan Yang, Xianqiang Huang, Yaxin Hou, Huan Gao, Jichun Cui, Chuansheng Cui, Tongxin Zhang
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Two transition metal (Cu and Pd)-catalyzed C–S, C–N, and C–C bond cross-coupling reactions for the preparation of N-fused benzo[4,5]imidazo[2,1-b]thiazole derivatives were developed. A variety of 3-substituted and 2,3-disubstituted benzo[4,5]imidazo[2,1-b]thiazoles were efficiently and conveniently synthesized from the coupling reaction via trans-1,2-diiodoalkenes, 1H-benzo[d]imidazole-2-thiols, and halobenzenes in moderate to excellent yields.