Synthesis of 2-Methyl-1-[(5-methylfuran-2-yl)methyl]- and 2-Methyl-1-[(5-methylpyrrol-2-yl)methyl]-1H-benzimidazoles
摘要:
A method for the synthesis of 2-methyl-1-[(5-methylfuran-2-yl)methyl]-1H-benzimidazoles based on the intramolecular cyclization of vicinal N-[(5-methylfuran-2-yl)methyl]aminoanilides has been developed. A study was carried out on the protolytic opening of the furan ring leading to the formation of a diketone fragment, which was then used for the formation of N-substituted pyrrole ring by the Paal-Knorr method. The effect of the nature of the amine on the cyclization was demonstrated.
Synthesis of 2-Methyl-1-[(5-methylfuran-2-yl)methyl]- and 2-Methyl-1-[(5-methylpyrrol-2-yl)methyl]-1H-benzimidazoles
作者:T. A. Stroganova、V. M. Red’kin、G. A. Kovalenko、V. K. Vasilin、G. D. Krapivin
DOI:10.1007/s10593-013-1374-2
日期:2013.12
A method for the synthesis of 2-methyl-1-[(5-methylfuran-2-yl)methyl]-1H-benzimidazoles based on the intramolecular cyclization of vicinal N-[(5-methylfuran-2-yl)methyl]aminoanilides has been developed. A study was carried out on the protolytic opening of the furan ring leading to the formation of a diketone fragment, which was then used for the formation of N-substituted pyrrole ring by the Paal-Knorr method. The effect of the nature of the amine on the cyclization was demonstrated.