Synthesis of Fused Imidazoles and Benzothiazoles from (Hetero)Aromatic <i>ortho</i>-Diamines or <i>ortho</i>-Aminothiophenol and Aldehydes Promoted by Chlorotrimethylsilane
New convenient conditions for benzimidazole and benzothiazole syntheses are described. A set of benzimidazoles, 3H-imidazo[4,5-b]pyridines, purines, xanthines and benzothiazoles was readily prepared from (hetero)aromatic ortho-diamines or ortho-aminothiophenol and aldehydes using chlorotrimethylsilane in DMF as a promoter and water-acceptor agent, followed by oxidation with air oxygen.
Chalapathi Rao, C. V.; Kondal Reddy, K.; Rao, N. V. Subba, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1980, vol. 19, # 11, p. 967 - 969
作者:Chalapathi Rao, C. V.、Kondal Reddy, K.、Rao, N. V. Subba
DOI:——
日期:——
RAO, C. V. CHALAPATHI;REDDY, K. K.;RAO, N. V. SUBBA, INDIAN J. CHEM., 1980, 19, N 11, 967-969
作者:RAO, C. V. CHALAPATHI、REDDY, K. K.、RAO, N. V. SUBBA