Facile synthesis of 2-alkylthio-3-amino-4H-imidazol-4-ones and 2H-imidazo[2,1-b]-1,3,4-thiadiazin-6(7H)-ones viaN-vinylic iminophosphorane
作者:Ming-Wu Ding、Bo-Qiao Fu、Ju-Zhen Yuan
DOI:10.1002/hc.20069
日期:——
by S-alkylation of 2-thioxo-3-amino-4-imidazolidinones 4, which were obtained via cyclization of isothiocyanates 2 with hydrazine hydrate. 5l–n reacted with Ph3P, C2Cl6, and NEt3 to give 2H-imidazo[2,1-b]-1,3,4-thiadiazin- 6(7H)-ones 7a–c in good yields. © 2005 Wiley Periodicals, Inc. Heteroatom Chem 16:76–80, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/hc
2-Alkylthio-3-amino-4H-imidazol-4-ones 5 通过 2-thioxo-3-amino-4-imidazolidinones 4 的 S-烷基化合成,2-thioxo-3-amino-4-imidazolidinones 4 是通过异硫氰酸酯 2 与水合肼环化获得的。5l–n 与 Ph3P、C2Cl6 和 NEt3 反应生成 2H-咪唑并[2,1-b]-1,3,4-噻二嗪-6(7H)-ones 7a-c,收率良好。© 2005 Wiley Periodicals, Inc. 杂原子化学 16:76–80, 2005; 在线发表于 Wiley InterScience (www.interscience.wiley.com)。DOI 10.1002/hc.20069