期刊
TETRAHEDRON
卷 73, 期 25, 页码 3458-3462出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2017.05.018
关键词
Benzimidazoles; PhSiH3; o-Phenylenediamines; N,N-Dimethylformamide; Cyclization reaction
资金
- National Natural Science Foundation of China [21402101, 21473226]
A simple approach to preparation of benzimidazoles from o-phenylenediamines and DMF derivatives, only employing PhSiH3 as promoter without any other additives, was reported. This route provided moderate to high yields with a broad substrate scope. A plausible mechanism for the reaction is proposed based on the spectroscopic characterization (e.g., HRMS and H-1 NMR) of the reaction mixture. (C) 2017 Elsevier Ltd. All rights reserved.
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