The invention belongs to the field of drug preparation, and in particular relates to a preparation method of high purity three fluoromethyl benzenyl alcohol methanesulfonate. With three fluorine methyl benzene propyl alcohol as raw material, methanesulfonyl chloride as acylating agent, three triethylamine as acid binding agent, dichloromethane as solvent, reaction; after the reaction with water hydrolysis, layering, organic layer drying, filtration, the filtrate is concentrated to obtain high purity of three fluorine methyl benzene alcohol methyl sulfonate. The purity of the three fluoromethyl phenylpropanol mesylate prepared by the invention is over 99.2%, and the yield is over 95%. The prepared products can meet the requirements of drug registration. In order to reduce the production of impurities and improve the purity, the reaction temperature of the invention, the reaction time and the concentration of decompress are used to remove the solvent. The invention has the advantages of easy to get raw materials, reasonable process and prepared samples, which can meet the requirements of drug registration.
【技术实现步骤摘要】
高纯度间三氟甲基苯丙醇甲磺酸酯的制备方法
本专利技术属于药物制备领域,具体涉及一种高纯度间三氟甲基苯丙醇甲磺酸酯的制备方法。
技术介绍
间三氟甲基苯丙醇甲磺酸酯的制备反应式如下:间三氟甲基苯丙醇甲磺酸酯是治疗慢性肾病药西那卡塞的中间体,由于我国新药注册要求对药物中间体的杂质也要进行研究,研究杂质去向和对成品的影响,根据美国专利(US7250533)方法制备的间三氟甲基苯丙醇甲磺酸酯杂质多,纯度低,而且产品得量超过理论量,证明还有在液相条件下不出锋的杂质。
技术实现思路
针对现有技术的不足,本专利技术的目的是提供一种高纯度间三氟甲基苯丙醇甲磺酸酯的制备方法,产品纯度达99.2%以上,收率达95%以上,制备的产品可以达到药品注册的要求。本专利技术所述的高纯度间三氟甲基苯丙醇甲磺酸酯的制备方法,包括以下步骤:(1)以间三氟甲基苯丙醇为原料,甲磺酰氯为酰化剂,三乙胺为缚酸剂,二氯甲烷为溶剂,进行反应;(2)反应结束后加水水解,静置分层,有机层经干燥、过滤,滤液浓缩得高纯度间三氟甲基苯丙醇甲磺酸酯。其中:间三氟甲基苯丙醇、甲磺酰氯与三乙胺的摩尔比为1:1.15~1.2:2.0~ ...
【技术保护点】
一种高纯度间三氟甲基苯丙醇甲磺酸酯的制备方法,其特征在于:包括以下步骤:(1)以间三氟甲基苯丙醇为原料,甲磺酰氯为酰化剂,三乙胺为缚酸剂,二氯甲烷为溶剂,进行反应;(2)反应结束后加水水解,静置分层,有机层经干燥、过滤,滤液浓缩得高纯度间三氟甲基苯丙醇甲磺酸酯。
【技术特征摘要】
1.一种高纯度间三氟甲基苯丙醇甲磺酸酯的制备方法,其特征在于:包括以下步骤:(1)以间三氟甲基苯丙醇为原料,甲磺酰氯为酰化剂,三乙胺为缚酸剂,二氯甲烷为溶剂,进行反应;(2)反应结束后加水水解,静置分层,有机层经干燥、过滤,滤液浓缩得高纯度间三氟甲基苯丙醇甲磺酸酯。2.根据权利要求1所述的高纯度间三氟甲基苯丙醇甲磺酸酯的制备方法,其特征在于:间三氟甲基苯丙醇、甲磺酰氯与三乙胺的摩尔比为1:1.15~1.2:2.0~2.5。3.根据权利要求1所述的高纯度间三氟甲基苯丙醇甲磺酸酯的制备方法,其特征在于:三乙胺的加料方式为分次加入。4.根据权利要求1所述的高纯度间三氟甲基苯丙醇甲磺酸酯的制备方法,其特征在于:反应温度为-10~-1℃,反应时间为1.8~2小时。5.根据权利要求1所述的高纯度间三氟甲基苯丙醇甲磺酸酯的制备方法,其特征在于:反应结束后加水水解,静置分层,水相再用二氯甲烷提取...
【专利技术属性】
技术研发人员:贺新恒,郑忠辉,蒋涛,贺维昊,蒋泽宇,
申请(专利权)人:山东新华制药股份有限公司,
类型:发明
国别省市:山东,37
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