Synthesis and some heterocyclisation reactions of CF2H- and CF2Cl-substituted 1,1-dicyanoethylenes
作者:Alexander S Golubev、Pavel V Pasternak、Alexander F Shidlovskii、Ljudmila N Savelèva、Boris B Averkiev、Vladimir N Nesterov、Michail Yu Antipin、Alexander S Peregudov、Nikolai D Chkanikov
DOI:10.1016/s0022-1139(01)00559-0
日期:2002.3
New CF2X-analogues of 1,1-dicyano-2,2-bis(trifluoromethyl)ethylene (1) (X=H, Cl) were synthesised by the condensation of polyfluoroketones with malononitrile followed by dehydration using thionyl chloride (or phosphorus pentoxide). The heterocyclisation reactions of new CF2X-analogues of 1,1-dicyano-2,2-bis(trifluoromethyl)ethylene with amidines, 5-aminopyrazoles and 3-methyl-2-pyrazolin-5-ones were
通过将多氟酮与丙二腈缩合,然后使用亚硫酰氯(或磷)脱水,合成了新的1,1-二氰基-2,2-双(三氟甲基)乙烯(1)(X = H,Cl)的CF 2 X-类似物五氧化物)。系统地研究了1,1-二氰基-2,2-双(三氟甲基)乙烯与s,5-氨基吡唑和3-甲基-2-吡唑啉-5-酮的新CF 2 X-类似物的杂环化反应。