Novel and convenient routes to substituted pyrroles and imidazoles
作者:Alan R. Katritzky、Lie Zhu、Hengyuan Lang、Olga Denisko、Zuoquan Wang
DOI:10.1016/0040-4020(95)00851-x
日期:1995.11
pyrroles. Lithiaiion of 6 followed by reactions with imines gives cyclized 4,5-dihydroimidazoles 14 which upon further treatment with ZnBr2 or direct refluxing in toluene yield the 1,25-trisubstituted imidazoles 15 in good yields.