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    • 3. 发明申请
    • Process For Preparing 1,3-Dibromoacetone, 1-3-Dichloroacetone and Epichlorohydrin
    • 1,3-二溴丙酮,1,3-二氯丙酮和环氧氯丙烷的制备方法
    • US20080249324A1
    • 2008-10-09
    • US10593397
    • 2005-05-17
    • Clark S. Davis
    • Clark S. Davis
    • C07D301/02C07C45/63
    • C07C45/63C07C45/81C07C49/16
    • A process for preparing 1,3-dibromoacetone, 1-3-dichloroacetone and epichlorohydrin which comprises: (a) reacting acetone with 2 moles of bromine to make a mixture of brominated acetone derivatives and byproduct hydrogen bromide; (b) equilibrating the mixture of brominated acetone derivatives and hydrogen bromide to produce 1,3-dibromoacetone as the major product; (c) crystallizing the 1,3-dibromoacetone; and (d) isolating the 1,3-dibromoacetone. The process may further include the steps of (e) reacting the 1,3-dibromoacetone with a chloride source to produce 1,3-dichloroacetone; (f) hydrogenating the isolated 1,3-dichloroacetone to produce 1,3-dichlorohydrin; and (g) cyclizing the 1,3-dichlorohydrin with a base to produce epichlorohydrin.
    • 一种制备1,3-二溴丙酮,1-3-二氯丙酮和表氯醇的方法,其包括:(a)使丙酮与2摩尔溴反应以制备溴化丙酮衍生物和副产物溴化氢的混合物; (b)使溴化丙酮衍生物和溴化氢的混合物平衡,得到1,3-二溴丙酮作为主要产物; (c)结晶1,3-二溴丙酮; 和(d)分离1,3-二溴丙酮。 该方法还可以包括以下步骤:(e)使1,3-二溴丙酮与氯化物源反应生成1,3-二氯丙酮; (f)氢化分离的1,3-二氯丙酮以制备1,3-二氯丙醇; 和(g)用碱环化1,3-二氯丙醇以产生表氯醇。
    • 4. 发明授权
    • Process for preparing 1,3-dibromoacetone, 1-3-dichloroacetone and epichlorohydrin
    • 1,3-二溴丙酮,1,3-二氯丙酮和表氯醇的制备方法
    • US07456322B2
    • 2008-11-25
    • US10593397
    • 2005-05-17
    • Clark S. Davis
    • Clark S. Davis
    • C07C45/00C07D301/02
    • C07C45/63C07C45/81C07C49/16
    • A process for preparing 1,3-dibromoacetone, 1-3-dichloroacetone and epichlorohydrin which comprises: (a) re-acting acetone with 2 moles of bromine to make a mixture of brominated acetone derivatives and byproduct hydrogen bromide; (b) equilibrating the mixture of brominated acetone derivatives and hydrogen bromide to produce 1,3-dibromoacetone as the major product; (c) crystallizing the 1,3-dibromoacetone; and (d) isolating the 1,3-dibromoacetone. The process may further include the steps of (e) reacting the 1,3-dibromoacetone with a chloride source to produce 1,3-dichloroacetone; (f) hydrogenating the isolated 1,3-dichloroacetone to produce 1,3-dichlorohydrin; and (g) cyclizing the 1,3-dichlorohydrin with a base to produce epichlorohydrin.
    • 一种制备1,3-二溴丙酮,1-3-二氯丙酮和表氯醇的方法,其包括:(a)用2摩尔溴重新作用丙酮以制备溴化丙酮衍生物和副产物溴化氢的混合物; (b)使溴化丙酮衍生物和溴化氢的混合物平衡,得到1,3-二溴丙酮作为主要产物; (c)结晶1,3-二溴丙酮; 和(d)分离1,3-二溴丙酮。 该方法还可以包括以下步骤:(e)使1,3-二溴丙酮与氯化物源反应生成1,3-二氯丙酮; (f)氢化分离的1,3-二氯丙酮以制备1,3-二氯丙醇; 和(g)用碱环化1,3-二氯丙醇以产生表氯醇。