Haloacetylated enol ethers.<b>9</b>. Synthesis of 4-trifluoromethyl-2-methyl[phenyl]pyrimidines and tetrahydro derivatives
作者:Nilo Zanatta、Madelon B. Fagundes、Ricardo Ellensohn、Marcelo Marques、Helio G. Bonacorso、Marcos A. P. Martins
DOI:10.1002/jhet.5570350231
日期:1998.3
The synthesis of 4-trifluoromethyl-2-methyl[phenyl]pyrimidines and the corresponding tetrahydro derivatives from the cyclo-condensation reaction of β-alkoxyvinyl trifluoromethyl ketones 1a-d with acetamidine or benzamidine hydrochloride, is reported. For the cyclo-condensation of 1a-d with acetamidine and benzamidine hydrochloride, two methods were tested: 1 M solution of sodium hydroxide (method A)
据报道由β-烷氧基乙烯基三氟甲基酮1a-d与乙am或苯甲hydro盐酸盐的环缩合反应合成4-三氟甲基-2-甲基[苯基]嘧啶和相应的四氢衍生物。对于1a-d与乙am和盐酸苄am的环缩合,测试了两种方法:1 M氢氧化钠溶液(方法A)和醇钠/醇溶液(方法B)。根据β-烷氧基乙烯基三氟甲基酮的结构和反应条件,获得嘧啶或四氢嘧啶或两种化合物的混合物。