Preparation and synthetic scope of 3-(4-methyl-2-R-pyrimidin-5-yl)-3-oxopropionic esters
作者:A. Yu. Potapov、A. V. Falaleev、Kh. S. Shikhaliev、G. V. Shatalov
DOI:10.1007/s11172-014-0720-6
日期:2014.9
A condensation of 2-R-5-acetyl-4-methylpyrimidines with dimethyl carbonate led to a number of 3-(2-R-4-methylpyrimidin-5-yl)-3-oxopropionic esters, which reacted with (piperidin-1-yl)carboxamidine and arylguanidines to give 2-R′-6-(2-R-4-methylpyrimidin-5-yl)-3H-pyrimidin-4-ones. A reaction of 3-(2-R-4-methylpyrimidin-5-yl)-3-oxopropionic esters with hydrazines led to the formation of 3-(2-R-4-methylpyrimidin-5-yl)-2-R″-1,2-dihydropyrazol-3-ones.
2-R-5-乙酰基-4-
甲基嘧啶与
碳酸二甲酯缩合生成了一系列3-(2-R-4-
甲基嘧啶-5-基)-
3-氧代丙酸酯,这些酯与(
哌啶-1-基)
脲和芳基
胍反应得到2-R′-6-(2-R-4-
甲基嘧啶-5-基)-3H-
嘧啶-4-酮。3-(2-R-4-
甲基嘧啶-5-基)-
3-氧代丙酸酯与
肼反应生成3-(2-R-4-
甲基嘧啶-5-基)-2-R″-1,2-
二氢吡唑-3-酮。