Reaction of 2-(2-oxo-2-arylethylidene)-2,3-dihydropyrimidine-4(1H)-ones with aldehydes
作者:A. A. Yavolovskii、L. V. Grishchuk、E. I. Bevzyuk、Yu. E. Ivanov、D. E. Stepanov、S. M. Pluzhnik-Gladyr、G. L. Kamalov
DOI:10.1134/s1070363214050156
日期:2014.5
3-dihydropyrimidine-4(1H)-ones react with aromatic and heteroaromatic aldehydes to form the unsaturated ketones, whereas in the case of 3- and 4-benzaldehydes the corresponding trans-2-styrylpyrimidine-4(3H)-ones were obtained. A possible mechanism of hydrolytic cleavage of the product of condensation of 2-(2-oxo-2-phenylethylidene)-2,3-dihydropyrimidine-4(1H)-one with paraformaldehyde under acid catalysis and mechanochemical
Specific Features of Tosylation of 2-Substituted Pyrimidin-4(3H)-ones Containing a Double Bond in the α-Position of the Side Chain
作者:A. A. Yavolovskii、D. E. Stepanov、L. V. Grishchuk、S. M. Pluzhnik-Gladyr、I. M. Rakipov、Yu. E. Ivanov、G. L. Kamalov
DOI:10.1134/s1070428021110051
日期:2021.11
of 2-[1-benzoyl-2-(2-furyl)vinyl]-6-methylpyrimidin-4(3H)-one, 2-[2-(4-nitrophenyl)vinyl]-6-methylpyrimidine-4(3H)-one, and 6-methyl-2-(2-oxo-2-phenylethylthio)pyrimidin-4(3H)-one were used to consider the relationship between the structure of the substrate and the direction of the tosylation reaction.
摘要 2-(1-羟基亚氨基-2-氧代-2-苯乙基)-6-R-嘧啶-4(3 H )-酮与过量对甲苯磺酰氯的反应分两个阶段进行,包括氧原子的连续氧化羟基亚氨基的基团和嘧啶环的酰胺片段的氧原子。所得二甲苯磺酸盐与乙二胺的反应通过置换嘧啶环 2-位的磺酰基进行。2-[1-苯甲酰基-2-(2-呋喃基)乙烯基]-6-甲基嘧啶-4( 3H )-one、2-[2-(4-硝基苯基)乙烯基]-6-甲基嘧啶-4的实例(3 H )-one, 和 6-methyl-2-(2-oxo-2-phenylethylthio)pyrimidin-4(3 H)-1 用于考虑底物结构与甲苯磺酰化反应方向的关系。