Acyl iodides in organic synthesis. Reactions of acetyl iodide with urea, thiourea, and their N,N′-disubstituted derivatives
作者:M. G. Voronkov、N. N. Vlasova、O. Yu. Grigor’eva、L. I. Belousova、A. V. Vlasov
DOI:10.1134/s1070428009040022
日期:2009.4
reacted with urea and its derivatives to give the corresponding N-substituted products. The reactions of acetyl iodide with thiourea, N,N′-dimethylthiourea, imidazolidine-2-thione, and hexahydropyrimidine-2-thione resulted in the formation of S- or N-acetyl derivatives, depending on the temperature and structure of the sulfur functionality (thione or thiol). By contrast, in the reaction of acetyl iodide
乙酰碘与尿素及其衍生物反应,得到相应的N-取代产物。乙酰碘化物与硫脲,N,N'-二甲基硫脲,咪唑烷-2-硫酮和六氢嘧啶-2-硫酮的反应取决于硫官能团的温度和结构而导致形成S-或N-乙酰基衍生物(硫酮或硫醇)。相反,在乙酰碘与N,N′-双(3-三乙氧基甲硅烷基丙基)硫脲的反应中,硅原子上的一个乙氧基被碘置换,形成N- 3-[(二乙氧基)碘甲硅烷基]丙基}-。ñ′-[3-(三乙氧基甲硅烷基)丙基]硫脲。后者在加热下分解,得到3-三乙氧基甲硅烷基丙基异硫氰酸酯和组成为C 45 H 97 IN 6 O 14.5 S 3 Si 6的含硅聚合物。