Uncommon Heterocyclization into a Pyrazole System of Z-3-(2-Naphthyl)-3-chloro-2-propenal Semicarbazone and Thiosemicarbazone
作者:E. V. Vashkevich、V. I. Potkin、N. G. Kozlov
DOI:10.1007/s11178-005-0235-6
日期:2005.5
By reaction of Z-3-(2-naphthyl)-3-chloro-2-propenal with semicarbazide hydrochloride and thiosemicarbazide the corresponding semicarbazone and thiosemicarbazone were obtained that underwent a heterocyclization into a pyrazole system with elimination of amide moieties and with migration of the naphthyl fragment into the position 4 of the pyrazole ring. The alkylation of 4-(2-naphthyl)pyrazole synthesized with 2-nitropentachloro-1,3-butadiene afforded 1,1-bis[4-(2-naphthyl)-pyrazol-1-yl]-2-nitrotrichloro-1,3-butadiene.
Z-3-(2-萘基)-3-氯-2-丙烯醛与盐酸氨基脲和氨基硫脲反应,得到相应的氨基脲和氨基硫脲,它们经过杂环化形成吡唑体系,消除酰胺部分并迁移萘基片段进入吡唑环的4位。用2-硝基五氯-1,3-丁二烯合成4-(2-萘基)吡唑烷基化得到1,1-双[4-(2-萘基)-吡唑-1-基]-2-硝基三氯-1, 3-丁二烯。