Rajappa, S.; Sreenivasan, R., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1980, vol. 19, # 7, p. 533 - 535
作者:Rajappa, S.、Sreenivasan, R.
DOI:——
日期:——
RAJAPPA S.; SREENIVASAN R., INDIAN J. CHEM., 1980, B19, NO 7, 533-535
作者:RAJAPPA S.、 SREENIVASAN R.
DOI:——
日期:——
MCFARLANE, MICHAEL D.;MOODY, DAVID J.;SMITH, DAVID M., J. CHEM. SOC. PERKIN TRANS.,(1988) N 3, 691-696
作者:MCFARLANE, MICHAEL D.、MOODY, DAVID J.、SMITH, DAVID M.
DOI:——
日期:——
o-Nitroaniline derivatives. Part 10. 5- and 6-Amino-1H-benzimidazole 3-oxides
作者:Michael D. McFarlane、David J. Moody、David M. Smith
DOI:10.1039/p19880000691
日期:——
Cyclisation of N-(4- or 5-acylamino-2-nitrophenyl)glycine esters in basic media gives alkyl 5- or 6-acylaminobenzimidazole-2-carboxylate N-oxides, e.g. (11a) or (11b). Acid hydrolysis of the latter, followed by reaction with ammonia, gives the title compounds (1b) and (1c), in acceptable yield. The corresponding reaction sequence with 4-acylamino-N-cyanomethyl-o-nitroanilines also gives (1b); where