Reaction of α-halogen substituted β-ethoxyvinyl trifluoromethyl ketones with 2-aminopyridine: new route to trifluoroacetyl-containing heterocycles
作者:Liliya M Kacharova、Igor I Gerus、Alexey D Kacharov
DOI:10.1016/s0022-1139(02)00190-2
日期:2002.10
The reaction of α-halosubstituted β-ethoxyvinyl trifluoromethyl ketones with 2-aminopyridine gives 3-trifluoroacetyl imidazo[1,2-a]pyridine and 3-halo-1,1,1-trifluoro-4-(2-pyridinylamino)-3-buten-2-ones. The product ratio depends on the nature of the α-halogen atom and the solvent.
α-卤代β-乙氧基乙烯基三氟甲基酮与2-氨基吡啶的反应得到3-三氟乙酰基咪唑并[1,2- a ]吡啶和3-卤代-1,1,1-三氟-4-(2-吡啶基氨基)-3 -丁2个。产物比率取决于α-卤素原子和溶剂的性质。