Unsaturated compounds containing nitrogen. Part 4. Further reactions of 1-chloro-2,3-diazabutadienes with S-nucleophiles
作者:William T. Flowers、John F. Robinson、David R. Taylor、Anthony E. Tipping
DOI:10.1039/p19810000349
日期:——
1-Chloro-1,4-diaryl-2,3-diazabutadienes (Ar1CClNNCHAr2), prepared by the reaction of thionyl chloride with aroylhydrazones (Ar1CONHNCHAr2), react with thiosemicarbazide or thiocarbohydrazide to give 2-arylidenehydrazino-5-aryl-1,3,4-thiadiazoles, and with potassium thiocyanate to give 1-thiocyanato-1,4-diaryl-2,3-diaza-butadienes which isomerize thermally to arylideneamino-5-aryl-1,3,4-thiadiazoles
通过亚硫酰氯与芳酰肼(Ar 1 CONHN CHAr 2)反应制得的1-Chloro-1,4-diaryl-2,3-diazabutadienes(Ar 1 CCl NN CHAr 2)与硫代氨基脲或硫代碳酰肼反应生成2-亚芳基肼基-5-芳基-1,3,4-噻二唑,并与硫氰酸钾反应生成1-硫氰酸根-1,4-二芳基-2,3-二氮杂-丁二烯,其热异构化为芳基氨基-5-芳基-1,3 ,4-噻二唑。1-氯-1,4-二苯基-2,3-二氮杂丁二烯与乙基黄原酸钾反应生成1-乙基黄蒽基-2,3-二氮杂丁二烯,经热解后生成2,5-二苯基-1,3,4-噻二唑。