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    • 90. 发明申请
    • PROCESS FOR THE PREPARATION OF GLYCIDYLESTERS OF BRANCHED CARBOXYLIC ACIDS
    • 制备分支羧酸的甘油三酯的方法
    • WO01062752A1
    • 2001-08-30
    • PCT/EP2001/002129
    • 2001-02-22
    • C07D301/30C07D303/16
    • C07D303/16
    • Process for the manufacture of diglycidylesters of alpha , alpha '-branched dicarboxylic acids, comprising (a) the reaction of the alpha , alpha '-branched dicarboxylic acid with a halo substituted monoepoxide such as an epihalohydrin, in a 1.1-20 acid equivalent ratio relative to the alpha , alpha '-branched aliphatic dicarboxylic acid, optionally in the presence of water and water-miscible solvent, and in the presence of a catalyst in an amount of at most 45 mol% of the acid equivalent amount of the alpha , alpha '-branched aliphatic dicarboxylic acid, at a temperature in the range of from 30 to 110 DEG C, during a period in the range of from 0.5 to 2.5 hr, (b) addition of alkali metal hydroxide or alkali metal alkanolate up to an acid equivalent ratio as to the alpha , alpha '-branched aliphatic dicarboxylic acid in the range of from 0.9:1 to 1.2:1, and reaction at a temperature of from 0 to 80 DEG C, (c) distillation of the obtained reaction mixture to remove the excess halo substituted monoepoxide and the solvent and water formed, and (d) removal of alkali metal halide salt, preferably by washing the obtained diglycidylester with water mixed with an inert organic solvent, after optionally treating the residual product with a concentrated aqueous alkali metal hydroxide solution, in order to complete the dehydrohalogenation.
    • 制备α,α'-支化二羧酸的二缩水甘油酯的方法,包括(a)α,α'-支化的二羧酸与卤代取代的单环氧化物如表卤代醇以1.1-20酸当量比的反应 任选地在水和水混溶性溶剂的存在下,并且在催化剂存在下,相对于α,α'-支化的脂肪族二羧酸,其量为α-酸的当量的至多45摩尔% α支链脂族二羧酸,温度范围为30〜110℃,时间范围为0.5〜2.5小时,(b)加入碱金属氢氧化物或碱金属链烷醇酯直至 相对于α,α'-支化的脂肪族二羧酸的酸当量比为0.9:1至1.2:1,在0至80℃的温度下反应,(c)将所得反应混合物 去除多余的卤素取代基 蒸发单环氧化物,形成溶剂和水,以及(d)除去碱金属卤化物盐,优选通过用浓缩的碱金属氢氧化物水溶液处理残留物后,用与惰性有机溶剂混合的水洗涤所得二缩水甘油酯, 以完成脱卤化氢。