醛和酮的1,2,3-噻二唑hydr的转化,包括Dimroth重排,生成1-亚烷基氨基-5-巯基1,2,3-三唑,这些杂环化合物的巯基通过α-溴乙酰苯的烷基化和环化反应对6,7-二氢-5H- [1,2,3]三唑[5,1– b ] [1,3,4]噻二嗪进行了研究。结果表明,苯乙酮与苯甲醛的的反应是非对映选择性的。通过转化环酮的prepared制备三唑并二嗪螺衍生物。
Phosphorus pentachloride-induced transformation of (1,2,3-thiadiazol-5-yl)hydrazones of acetophenone
作者:T. A. Kalinina、P. E. Prokhorova、T. V. Glukhareva、Yu. Yu. Morzherin
DOI:10.1007/s11172-011-0154-3
日期:2011.5
Reactions of (4-ethoxycarbonyl-1,2,3-thiadiazol-5-yl)hydrazones of acetophenone with PCl5 led to transformation of the 1,2,3-thiadiazole moiety involving four atoms of the side chain to give 6-aryl-5H-[1,2,3]triazolo[5,1-b][1,3,4]thiadiazine-3-carbonyl chlorides. Reaction of the latter with alcohols and amines gave the corresponding esters and amides.