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盐酸(R)-沙丁胺醇的不对称合成 被引量:2

Enantioselective Synthesis of (R)-Salbutamol Hydrochloride
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摘要 研究了一种化学不对称合成盐酸(R)-沙丁胺醇的方法.以自制的手性龙脑基β-二酮铁络合物为催化剂催化起始原料3-乙酰氧基甲基-4-乙酰氧基苯乙烯(1)的不对称环氧化,得到(R)-3-乙酰氧基甲基-4-乙酰氧基苯基环氧乙烷(2),这一步的化学收率和光学收率都较高.然后环氧化合物2与叔丁胺发生开环反应,再与盐酸成盐即制得盐酸(R)-沙丁胺醇.合成盐酸(R)-沙丁胺醇只需两步,总收率为68%.还考察了反应温度、催化剂种类、催化剂的量等因素对3-乙酰氧基甲基-4-乙酰氧基苯乙烯(1)的不对称环氧化的化学产率和光学收率的影响. The enantioselective synthesis of (R)-salbutamol hydrochloride was investigated. The asymmetric epoxidation of 3-acetoxymethyl-4-acetyloxystyrene (1) catalyzed by chiral camphyl β-diketone iron complex enantioselectively afforded (R)-3-acetoxymethyl-4-acetyloxy styrene oxide (2) in good yield and enantioselectivity. In following steps, styrene oxide 2 was converted into (R)-salbutamol hydrochloride in 68% overall yield via the ring-opening of chiral terminal styrene oxide 2 with t-butylamine and then with hydrochloride. Some factors effecting the yield and the enantioselectivity of asymmetric epoxidation of 3-acetoxymethyl-4- acetyloxystyrene (1) were discussed.
出处 《有机化学》 SCIE CAS CSCD 北大核心 2007年第12期1558-1561,共4页 Chinese Journal of Organic Chemistry
基金 江苏省教育厅高校自然科学计划(No.05KJD150024) 淮海工学院自然科学研究基金(Nos.Z200521 22006011)资助项目.
关键词 盐酸(R)-沙丁胺醇 龙脑基β-二酮 铁络合物 不对称环氧化 (R)-salbutamol hydrochloride camphyl β-diketone iron complex asymmetric epoxidation
作者简介 E-mail:cheng_qingfang@yahoo.com.cn
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二级参考文献74

共引文献35

同被引文献22

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