The Reactions of Tropone Tosylhydrazone Sodium Salt with Acetylene Derivatives Possessing Electron-Withdrawing Groups: A Novel Method of Synthesis of 1<i>H</i>-1,2-Benzodiazepine Derivatives
作者:Katsuhiro Saito
DOI:10.1246/bcsj.60.2105
日期:1987.6
Reactions of tropone tosylhydrazone sodium salt with dimethyl and diethyl acetylenedicarboxylate gave dimethyl and diethyl 1H-1,2-benzodiazepin-3,4-dicarboxylate, respectively. The same reactions, but using ethyl acetylenecarboxylate and 3-butyn-2-one, afforded ethyl 1H-1,2-benzodiazepin-4-carboxylate and 4-acetyl-1H-1,2-benzodiazepine, respectively, accompanied by 8-azaheptafulvene derivatives derived
托酮甲苯磺酰腙钠盐与乙炔二甲酸二甲酯和乙炔二甲酸二甲酯的反应分别得到1H-1,2-苯并二氮杂-3,4-二甲酸二甲酯和二乙酯。相同的反应,但使用乙炔羧酸乙酯和 3-butyn-2-one,分别得到 1H-1,2-benzodiazepin-4-carboxylate 和 4-acetyl-1H-1,2-benzodiazepine,伴随着 8-azaheptafulvene由钠盐和乙炔衍生物衍生的衍生物,以及由对甲苯亚磺酸和乙炔衍生物形成的对甲苯亚磺酸酯。钠盐与2-丁酸乙酯反应得到相应的亚磺酸酯,但没有得到二氮杂衍生物。