CN102329286B - 一种新的合成3-氧杂环丁酮的方法 - Google Patents

一种新的合成3-氧杂环丁酮的方法 Download PDF

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CN102329286B
CN102329286B CN201110175825.3A CN201110175825A CN102329286B CN 102329286 B CN102329286 B CN 102329286B CN 201110175825 A CN201110175825 A CN 201110175825A CN 102329286 B CN102329286 B CN 102329286B
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CN102329286A (zh
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宋艳民
陈鹏飞
郭少雄
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TIANJIN QUANHECHENG TECHNOLOGY Co Ltd
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Abstract

一种新的合成3-氧杂环丁酮的方法。以1,3-二氯丙酮为起始原料,经过水解、关环一锅法反应后得到关键中间体,收率大于80%,然后脱保护得到3-氧杂环丁酮,总收率大于50%,路线如下

Description

一种新的合成3-氧杂环丁酮的方法
技术领域
本发明涉及一种新的合成3-氧杂环丁酮的方法。 
背景技术
3-氧杂环丁酮是重要的生物医药中间体,可广泛应用于各种药物的合成当中。其分子量小,结构独特,可以衍生出多种下游产品,就有广泛的用途。目前,合成3-氧杂环丁酮的方法有如下几种方法,但这些方法涉及到危险品的使用,如氢化钠、丁基锂、叠氮甲烷等;反应路线长,反应收率低,一般不超过10%;不便进行放大等缺点,使得3-氧杂环丁酮的生产厂家非常少,价格昂贵,严重阻碍了其下游产品的开发和其在生物医药领域的进一步发展。 
合成路线1: 
合成路线2: 
合成路线3: 
合成路线4: 
发明内容
为了克服3-氧杂环丁酮在放大生产上的种种不利因素,开发一条可行的工艺路线,本实 用新型提供了一条原料低廉、路线短、无危险试剂的使用、收率高等特点的新的合成路线,使得该产品能够进行规模化生成,且价格低廉,便于推广。 
本发明解决其技术问题所采用的技术方案是:以1,3-二氯丙酮为起始原料,经过水解、关环一锅法反应后得到关键中间体,收率大于80%,然后脱保护得到3-氧杂环丁酮,总收率大于50%,路线如下: 
本发明的有益效果是,避免了危险化学试剂的使用、缩短了反应路线、降低了反应成本、提高了反应收率,操作简单,容易纯化,可以进行放大生产。 
具体实施方式
1.水解、关环反应 
将1,3-二氯丙酮(50g)溶于无水甲醇(350mL)中,在0℃下缓慢滴加甲醇钠的甲醇溶液(30g,700mL),滴加完毕后,室温下搅拌30min。TCL跟踪反应结束,在反应液中缓慢滴加水(3.6g),控制滴加温度为0℃,滴加完毕后,升温至回流,反应6小时。将反应液浓缩至体积为(100mL),乙酸乙酯萃取,合并有机相,并用食盐水洗涤、硫酸钠干燥,浓缩精馏的产品2(39.2g),收率为84%。 
将1,3-二氯丙酮(500g)溶于无水甲醇(3.5L)中,在0℃下缓慢滴加甲醇钠的甲醇溶液(300g,7L),滴加完毕后,室温下搅拌30min。TCL跟踪反应结束,在反应液中缓慢滴加水(36g),控制滴加温度为0℃,滴加完毕后,升温至回流,反应6小时。将反应液浓缩至体积为(1L),乙酸乙酯萃取,合并有机相,并用食盐水洗涤、硫酸钠干燥,浓缩精馏的产品2(401g),收率为86%。 
将1,3-二氯丙酮(1kg)溶于无水甲醇(7L)中,在0℃下缓慢滴加甲醇钠的甲醇溶液(600g,14L),滴加完毕后,室温下搅拌30min。TCL跟踪反应结束,在反应液中缓慢滴加水(72g),控制滴加温度为0℃,滴加完毕后,升温至回流,反应6小时。将反应液浓缩至体积为(2L),乙酸乙酯萃取,合并有机相,并用食盐水洗涤、硫酸钠干燥,浓缩精馏的产品2(780g), 收率为84%。 
2.脱保护反应 
将化合物2(10g)溶于二氯甲烷(500mL)中,加入催化量的浓盐酸,将反应液加热至回流,反应12小时后,TLC跟踪反应结束。在反应液中缓慢加入固体碳酸钠,调pH=7,过滤,浓缩掉绝大部分溶剂后,精馏的产品4.1g,收率为66%。 
将化合物2(100g)溶于二氯甲烷(5L)中,加入催化量的浓盐酸,将反应液加热至回流,反应12小时后,TLC跟踪反应结束。在反应液中缓慢加入固体碳酸钠,调pH=7,过滤,浓缩掉绝大部分溶剂后,精馏的产品43g,收率为70%。 
将化合物2(1kg)溶于二氯甲烷(50L)中,加入催化量的浓盐酸,将反应液加热至回流,反应12小时后,TLC跟踪反应结束。在反应液中缓慢加入固体碳酸钠,调pH=7,过滤,浓缩掉绝大部分溶剂后,精馏的产品423g,收率为69%。 

Claims (2)

1.一种3-氧杂环丁酮的制备方法,其特征在于包括如下步骤:
水解、关环反应:
将1,3-二氯丙酮50g溶于无水甲醇350mL中,在0℃下缓慢滴加甲醇钠的甲醇溶液30g,700mL,滴加完毕后,室温下搅拌30min,TLC跟踪反应结束,在反应液中缓慢滴加水3.6g,控制滴加温度为0℃,滴加完毕后,升温至回流,反应6小时,将反应液浓缩至体积为100mL,乙酸乙酯萃取,合并有机相,并用食盐水洗涤、硫酸钠干燥,浓缩精馏得39.2g化合物2,收率为84%;
脱保护反应:
将10g化合物2溶于二氯甲烷500mL中,加入催化量的浓盐酸,将反应液加热至回流,反应12小时后,TLC跟踪反应结束,在反应液中缓慢加入固体碳酸钠,调pH=7,过滤,浓缩掉绝大部分溶剂后,精馏得产品4.1g,收率为66%,所述化合物2为
2.一种3-氧杂环丁酮的制备方法,其特征在于包括如下步骤:
水解、关环反应:
将1,3-二氯丙酮500g溶于无水甲醇3.5L中,在0℃下缓慢滴加甲醇钠的甲醇溶液300g,7L,滴加完毕后,室温下搅拌30min,TLC跟踪反应结束,在反应液中缓慢滴加水36g,控制滴加温度为0℃,滴加完毕后,升温至回流,反应6小时,将反应液浓缩至体积为1L,乙酸乙酯萃取,合并有机相,并用食盐水洗涤、硫酸钠干燥,浓缩精馏得401g化合物2,收率为86%;
脱保护反应:
将100g化合物2溶于二氯甲烷5L中,加入催化量的浓盐酸,将反应液加热至回流,反应12小时后,TLC跟踪反应结束,在反应液中缓慢加入固体碳酸钠,调pH=7,过滤,浓缩掉绝大部分溶剂后,精馏得产品43g,收率为70%,所述化合物2为
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CN109627228A (zh) * 2017-10-09 2019-04-16 柳州丰康泰科技有限公司 一种3-氧杂环丁酮的合成方法
CN108947941B (zh) * 2018-06-22 2022-02-11 华东师范大学 一种3-氧杂环丁酮的制备方法

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CN101486692A (zh) * 2009-03-03 2009-07-22 复旦大学 一种光学纯的(r)-4-三卤甲基-2-杂环丁酮的制备方法

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