REACTIONS OF TROPONE TOSYLHYDRAZONE SODIUM SALT WITH ACETYLENE DERIVATIVES: A NOVEL SYNTHESIS OF 1<i>H</i>-1,2-BENZODIAZEPINE DERIVATIVES
作者:Katsuhiro Saito
DOI:10.1246/cl.1983.463
日期:1983.4.5
The reactions of tropone tosylhydrazone sodium salt (1) with acetylenes (3a–3c) afforded 1H-1,2-benzodiazepines (8a–8c), which are considered to be formed by additions of diazotropylidene (2) with the acetylenes via norcaradiene intermediates (6).
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