Reaction of 2,3-dichloro-5,6-dicyanopyrazine with enamines and some tertiary amines
作者:Dongfeng Hou、Atsushi Oshida、Masaru Matsuoka
DOI:10.1002/jhet.5570300620
日期:1993.12
The reaction of 2,3-dichloro-5,6-dicyanopyrazine (1) with enamines as well as a few tertiary amines as enamine precursors was investigated. Both reactions gave aminovinyl-substituted pyrazine derivatives. During the attempted purification of 3c or 3d by column chromatography on silica gel, 2-chloro-5,6-dicyano-3-(1′-oxocyclopent-2′-yl)pyrazine (4) was obtained, apparently by hydrolytic cleavage. The
研究了2,3-二氯-5,6-二氰基吡嗪(1)与烯胺以及几种叔胺作为烯胺前体的反应。两个反应均得到氨基乙烯基取代的吡嗪衍生物。在尝试通过硅胶柱色谱法纯化3c或3d的过程中,显然通过水解裂解获得了2-氯-5,6-二氰基-3-(1'-氧代环戊-2'-基)吡嗪(4)。制备的产品作为潜在的杀虫剂都引起了人们的兴趣。