Synthesis of pyrido[2,3-d]pyrimidines from 6-amino-1,3-dimethyluracil and aldehydes
作者:Yu. A. Azev、O. S. Ermakova、A. M. Gibor、V. A. Bakulev、M. A. Ezhikova、M. I. Kodess
DOI:10.1134/s1070428015120210
日期:2015.12
6-Amino-1,3-dimethyluracil reacted with aliphatic aldehydes on heating in formic acid to give mixtures of 1,3,7,9-tetramethylpyrido[2,3-d: 6,5-d']dipyrimidine-2,4,6,8(1H,3H,7H,9H)-tetraone and the corresponding 5,6-dialkyl-1,3-dimethylpyrido[2,3-d]pyrimidine-2,4(1H,3H)-diones. The reaction of 6-amino-1,3-dimethyluracil with 3-phenylprop-2-enal under analogous conditions afforded 6-benzyl-1,3-dimet
6-氨基-1,3-二甲基尿嘧啶与脂肪醛在甲酸中加热反应,得到1,3,7,9-四甲基吡啶[2,3- d:6,5 - d '] dipyrimidine -2,4的混合物,6,8(1 H,3 H,7 H,9 H)-丁酮和相应的5,6-二烷基-1,3-二甲基吡啶并[2,3- d ]嘧啶-2,4(1 H,3 H)-二酮。6-氨基-1,3-二甲基尿嘧啶与3-苯基丙-2-烯醛在类似条件下的反应得到6-苄基-1,3-二甲基-5-[(E)-2-苯基乙烯基]吡啶基[2,3] - d ]嘧啶-2,4(1 ħ,3 ħ) -二酮和1,3-二甲基-5-苯基吡啶并[2,3-d ]嘧啶-2,4(1H,3H)-二酮。在标题化合物与3-苯基丙醛二乙基乙缩醛反应中获得1,3-二甲基-7-苯基吡啶并[2,3- d ]嘧啶-2,4(1H,3H)-二酮。