检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:陈光勇[1] 李安良[2] 刘晓波[1] 严亚[1]
机构地区:[1]大理医学院药学系,云南大理671000 [2]北京大学药学院,北京100083
出 处:《华西药学杂志》2001年第5期362-362,共1页West China Journal of Pharmaceutical Sciences
摘 要:目的 :改进对 乙酰基苯甲醚的合成工艺。方法 :以苯甲醚为原料 ,乙酰氯作酰化剂 ,无水AlCl3 作催化剂 ,控制反应温度 ,经乙醚提取 ,干燥 ,减压蒸馏得产品。结果 :收率从醋酐法的 93.3 %提高到 96 .7%。结论 :本法收率较高且稳定 ,反应条件温和 ,是一种合成对OBJECTIVE:To improve the synthetic technique.METHODS:The reaction was carried out under the conditions of taking phenylmethyl ether as the synthetic material, acetylchloride as the acetylization agent, aluminium chloride anhydrous as the catalyst, and controlling the reactive temperature. The final products were extracted by ether, dried, then distilled in vacuum, the purified p methoxyacetophenone was obtained.RESULTS:The product rate could be raised from 93.3% to 96.7%.CONCLUSION:This method has high product rate and its reactive conditions are mild and steady.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.49