作者:L. S. Vasil’ev、S. V. Baranin、A. V. Ignatenko、Yu. V. Nelyubina、V. A. Dorokhov
DOI:10.1007/s11172-010-0254-5
日期:2010.7
Earlier unknown 4-alkoxy-and 4-hydroxy-5-methyl-4-trifluoromethyl-1,4-dihydropyri-do[4,3-d]pyrimidines were obtained by the reaction of 5-acetyl-4-dimethylaminovinyl-6-(trifluoromethyl)pyrimidine with alcoholic (aqueous) solutions of NH3. The former eliminate alcohol (water) on sublimation in vacuo to be converted to 5-methyl-4-(trifluoromethyl)-pyrido[4,3-d]pyrimidine. The latter upon the action of alcohols (water) under mild conditions were reverted to the corresponding 4-alkoxy-and 4-hydroxydihydropyrido[4,3-d]pyrimidines.
早先未知的 4-烷氧基和 4-羟基-5-甲基-4-三氟甲基-1,4-二氢-do[4,3-d]嘧啶是通过 5-乙酰基-4-二甲基氨基乙烯基-6-(三氟甲基)嘧啶与 NH3 的醇(水)溶液反应得到的。前者在真空中升华时消除醇(水),转化为 5-甲基-4-(三氟甲基)-吡啶并[4,3-d]嘧啶。后者在醇类(水)的作用下,在温和条件下还原成相应的 4-烷氧基和 4-羟基二氢吡啶并[4,3-d]嘧啶。