作者:O. S. Eltsov、V. S. Mokrushin、A. V. Tkachev
DOI:10.1007/s11172-005-0116-8
日期:2004.10
Successive alkylation of 5-(3-phenylthioureido)-3H-imidazole-4-carboxamides with alkyl halides and chloroacetone gave (N-oxopropylimidazolyl)isothioureas, which were easily converted into derivatives of purine and imidazopyrazinone. In the case of ethyl 5-(3-phenylthioureido)-3H-imidazole-4-carboxylate, primary alkylation occurs at the N atom of the imidazole ring. Reactions of 5-(3-phenylthiourei
5-(3-苯基硫脲基)-3H-咪唑-4-甲酰胺与卤代烷和氯丙酮的连续烷基化得到(N-氧代丙基咪唑基)异硫脲,其很容易转化为嘌呤和咪唑并吡嗪酮的衍生物。在 5-(3-苯基硫脲基)-3H-咪唑-4-羧酸乙酯的情况下,初级烷基化发生在咪唑环的 N 原子上。5-(3-苯基硫脲基)-3H-咪唑-4-甲酰胺与卤代酮反应得到许多4-羟基-2-咪唑基亚胺噻唑烷和2-咪唑基亚氨基-Δ4-噻唑啉。