4-(2-pyridyl)pyrimidine the steric hindrance directs the reaction to the pyrimidinium N-ylides and, subsequently, to the formation of the pyrrolo[1,2-c]pyrimidines. The new pyrrolo[1,2-c]pyrimidines and the new indolizines were structurally characterized through NMR spectroscopy. The X-ray structures of two of the starting materials, 4-(2-pyridyl)pyrimidine and 4-(4-pyridyl)pyrimidine, are also reported
synthesis of functionalized 4- or 5-(hetero)arylpyrimidines via decarboxylativecross-coupling reaction from readily available pyrimidine-4- and pyrimidine-5-carboxylates was described. In the presence of dual-catalyst system of Pd(PPh3)4/Cu2O, the reaction proceeds smoothly, tolerates a variety of functional groups, and provides easy access to the synthesis of different (hetero)arylpyrimidines compounds.
描述了一种直接的方法,用于从容易获得的嘧啶-4-和嘧啶-5-羧酸酯上通过脱羧交叉偶联反应合成官能化的4-或5-(杂)芳基嘧啶。在Pd(PPh 3)4 / Cu 2 O的双催化剂体系存在下,反应平稳进行,可以耐受各种官能团,并易于合成不同的(杂)芳基嘧啶化合物。
[EN] PROCESS FOR THE PREPARATION OF SUBSTITUTED PYRIMIDINES<br/>[FR] PROCÉDÉ DE PRÉPARATION DE PYRIMIDINES SUBSTITUÉES
申请人:METHYLGENE INC
公开号:WO2015006875A1
公开(公告)日:2015-01-22
This invention relates to an improved process of making compounds of Formula (I) and synthetic intermediates thereof. (I) In particular, the invention relates to an improved process to prepare N-(2-aminophenyl)-4- ((pyrimidin-2-ylamino)methyl)benzamides which requires fewer steps, is efficient, can be used on an industrial scale, and results in a final product which is suitable for pharmaceutical use.
Résumé N,N,N’,N’-Tetrabromobenzene-1,3-disulfonamide was used as an efficient catalyst for the one-pot synthesis of pyrimidine derivatives in excellent yields from triethoxymethane, ammonium acetate, and various ketone derivatives at 100–110 °C under solvent-free conditions. Supplementary Materials: Supplementary materials for this article are supplied as separate files: mmc1.docx mmc2.docx
摘要 N,N,N',N'-四溴苯-1,3-二磺酰胺被用作高效催化剂,在无溶剂条件下,以优异的产率在 100–110 °C 下从三乙氧基甲烷、醋酸铵和各种酮衍生物一锅合成嘧啶衍生物。 supplementary materials: 本文的补充材料作为单独文件提供: mmc1.docx mmc2.docx
Direct access to pyrimidines through organocatalytic inverse-electron-demand Diels–Alder reaction of ketones with 1,3,5-triazine
作者:Gongming Yang、Qianfa Jia、Lei Chen、Zhiyun Du、Jian Wang
DOI:10.1039/c5ra16995j
日期:——
An organocatalytic inverse-electron-demand Diels–Alder reaction of ketones with 1,3,5-triazine through enamine catalysis has been developed.