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作 者:刘艳梅[1] 刘杰 李海华[1] 刘娅静[1] 陈晓超[1] 官儒奇[1] 赵亚娟[1]
机构地区:[1]温州大学化学与材料工程学院,浙江温州325027 [2]中国昆仑工程公司辽宁分公司,辽宁沈阳111003
出 处:《化工技术与开发》2014年第4期28-31,共4页Technology & Development of Chemical Industry
基 金:浙江省重中之重化学一级学科(316406125020301);浙江省公益技术应用研究计划项目(2013C31129)的资助
摘 要:以噻吩和3-氯丙酰氯为原料,经傅克反应生成3-氯-1-(2-噻吩)-丙酮,用硼氢化钠加氢还原得到混旋的度洛西汀中间体3-氯-1-(2-噻吩)-丙醇中间体。利用D-扁桃酸为拆分剂对其中间体进行手性拆分得到较纯的(S)-3-氯-1-(2-噻吩)-丙醇。实验结果表明,3-氯-1-(2-噻吩)-丙醇与D-扁桃酸摩尔的量的比值为主要因素,析出晶体温度和溶剂为次要因素。以苯为溶剂时,3-氯-1-(2-噻吩)-丙醇与D-扁桃酸的量的摩尔比值为1∶0.4,析出温度为0℃,拆分效果较好,其o.p.值为74%。Starting from thiophene and 3-chloropropinylchloride, 3-chloro-1-(2-thienyl)propanone was prepared by Friedel-Crafts reaction. Then using sodium borohydride, 3-chloro-1-(2-thienyl)propanol was prepared through hydrogenation reduction. Through chiral separation, the relatively pure product (S)-3-chloro-1-(2-thienyl)propanol was got. The results of experiment indicated that the molar ratio of 3-chloro-1-(2-thienyl)propanol to D-(-)-mandelic acid was the main factor, and the crystallized temperature and the solvent were secondary factors. When the solvent was benzene and the molar ratio of D-(-)-mandelic acid to 3-chloro-1-(2-thienyl) propanol was 0.4:1, the crystallized temperature was 0℃, the better results of separation was got, the value of o.p. (optical purity) was 74%.
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