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    • 2. 发明授权
    • Process for the production of
2,4-diamino-5-(3',4',5'-trimethoxybenzyl)-pyrimidine
    • 制备2,4-二氨基-5-(3(40,4 {40,5 {40-三甲氧基苄基) - 嘧啶的方法
    • US4125721A
    • 1978-11-14
    • US820413
    • 1977-08-01
    • Walter LiebenowJaroslav Prikryl
    • Walter LiebenowJaroslav Prikryl
    • C07D239/48C07D239/49
    • C07D239/49C07C255/00
    • A process for the production of 2,4-diamino-5-(3',4',5'-trimethoxybenzyl)-pyrimidine by condensing trimethoxy benzaldehyde with a substituted propionitrile compound and reacting the condensation product obtained with guanidine, wherein a .beta.-akyl-(aryl-, benzyl-)-oxy-ethyleneoxy-propionitrile corresponding to the formulaR--O--CH.sub.2 --CH.sub.2 --O--CH.sub.2 --CH.sub.2 --CN (I)in which R represents an alkyl group, an optionally substituted phenyl group or a benzyl group, is condensed with trimethoxy benzaldehyde in the presence ofBasic reagents to form a compound corresponding to the general formula ##STR1## in which R is as defined above, and the condensation product (II) obtained is reacted with guanidine in known manner to form 2,4-diamino-5-(3',4',5'-trimethoxybenzyl)-pyrimidine.
    • 通过将三甲氧基苯甲醛与取代的丙腈化合物缩合并使所得缩合产物与胍反应来制备2,4-二氨基-5-(3',4',5'-三甲氧基苄基) - 嘧啶的方法, 对应于式RO-CH2-CH2-O-CH2-CH2-CN(I)的烷基 - (芳基 - ,苄基 - ) - 氧基 - 乙烯氧基 - 丙腈,其中R表示烷基,任选取代的苯基或 苄基,在碱性试剂存在下与三甲氧基苯甲醛缩合形成与通式(II)化合物相关的化合物,其中R如上定义,所得缩合产物(II)与胍反应 已知的方法形成2,4-二氨基-5-(3',4',5'-三甲氧基苄基) - 嘧啶。