CN103483297A - 一种由烯烃合成丙位内酯的生产方法 - Google Patents

一种由烯烃合成丙位内酯的生产方法 Download PDF

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CN103483297A
CN103483297A CN201310392015.2A CN201310392015A CN103483297A CN 103483297 A CN103483297 A CN 103483297A CN 201310392015 A CN201310392015 A CN 201310392015A CN 103483297 A CN103483297 A CN 103483297A
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production method
olefine
lactone
acetic acid
reflux
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薛金春
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Yancheng City Chunzhu Aroma Co Ltd
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Yancheng City Chunzhu Aroma Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D307/00Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/02Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
    • C07D307/26Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
    • C07D307/30Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D307/32Oxygen atoms
    • C07D307/33Oxygen atoms in position 2, the oxygen atom being in its keto or unsubstituted enol form

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Abstract

本发明涉及一种合成丙位内酯的生产方法,特别涉及一种由烯烃合成丙位内酯的生产方法。其特征是:生产方法为:在装有回流冷凝管和温度计搅拌的三口瓶内,投入1摩尔每升烯烃的无水醋酸溶液和2摩尔+3价醋酸锰,烯烃与醋酸锰的摩尔比为1∶2.0,再加入一定量的醋酐,反应温度在110℃到180℃之间,加热回流至瓶内红褐色颜色消失,再回流一小时,降温后,蒸馏回收醋酸、醋酐溶剂和未反应烯烃,再精馏出内酯成品,瓶底锰盐回收。由于采用上述技术方案,本发明所具有的优点和积极效果是:低投入,低能耗,生产路线短,无三废,易工业化生产。

Description

一种由烯烃合成丙位内酯的生产方法
技术领域
本发明涉及一种合成丙位内酯的生产方法,特别涉及一种由烯烃合成丙位内酯的生产方法。
背景技术
丙位内酯作为香精中常用香原料,其系列丙位内酯具有强烈的香草、水果奶味香气,广泛用于食品、香烟、酒类产品,因此对该产品含量香气具有一定的要求。目前国内市场上该系列产品与国外有一定差距,关于丙位内酯的制备方法,已工业化合成路线有如下两条。其中一条路线可用如下公式表示:
Figure BSA0000094726250000011
它是以醇和丙烯酸为原料,通过自由基加成反应而得,这种制备方法,设备投资大,有些低碳醇要用高压釜来反应,而且反应杂质多,分离过程中高真空精馏需要很多能耗。
另一条合成路线,可以用如下公式表示:
它是以醛和丙烯酸反应生成2-烯酸,再硫酸异构内酯化,此法缺点是生产路线长,采用硫酸异构化,会产生大量废酸水。
发明内容
本发明所要解决的技术问题是:提供一种由烯烃合成丙位内酯的生产方法,能用烯烃自由基加成一步合成丙位内酯。
本发明解决其技术问题所采用的技术方案是:利用烯烃与+3价醋酸锰进行自由基加成一步合成丙位内酯,解决了当前高投入、高能耗、生产路线长、三废等诸多问题。
本发明合成路线可用下列公式表示:
其中R为甲基或乙基、丙基、丁基、戊基等系列直链烷基。
其特征是:生产方法为:在装有回流冷凝管和温度计搅拌的三口瓶内,投入1摩尔每升烯烃的无水醋酸溶液和2摩尔+3价醋酸锰,烯烃与醋酸锰的摩尔比为:1:2.0,再加入一定量的醋酐,反应温度在110℃到180℃之间,加热回流至瓶内红褐色颜色消失,再回流一小时,降温后,蒸馏回收醋酸、醋酐溶剂和未反应烯烃,再精馏出内酯成品,瓶底锰盐回收。
由于采用上述技术方案,本发明所具有的优点和积极效果是:低投入,低能耗,生产路线短,无三废,易工业化生产。
具体实施方式
实施例1:在2升三口烧瓶内装有回流冷凝管,温度计和搅拌装置,投入44克1-癸烯、950克冰醋酸、482克无水+3价醋酸锰和300克醋酐,加热搅拌回流,温度为125℃,加热回流2小时至瓶内颜色有红褐色变为清亮,再回流1小时,冷却回收醋酸和醋酐,减压收集0.05毫米汞柱,98-99℃馏份,得丙位十二内酯产品约30克(以消耗1-癸烯计算)。
实施例2:在2升三口烧瓶内装有回流冷凝管,温度计和搅拌装置,投入34.9克1-辛烯、950克冰醋酸、482克无水+3价醋酸锰和300克醋酐,加热搅拌回流,温度为125℃,加热回流2小时至瓶内颜色有红褐色变为清亮,再回流1小时,冷却回收醋酸和醋酐,减压收集1.4千帕斯卡,153-155℃馏份,得产品丙位十一内酯约28克(以消耗1-辛烯计算)。

Claims (1)

1.一种由烯烃合成丙位内酯的生产方法,其特征是:生产方法为:在装有回流冷凝管和温度计搅拌的三口瓶内,投入1摩尔每升烯烃的无水醋酸溶液和2摩尔+3价醋酸锰,烯烃与醋酸锰的摩尔比为:1:2.0,再加入一定量的醋酐,反应温度在110℃到180℃之间,加热回流至瓶内红褐色颜色消失,再回流一小时,降温后,蒸馏回收醋酸、醋酐溶剂和未反应烯烃,再精馏出内酯成品,瓶底锰盐回收。
CN201310392015.2A 2013-08-27 2013-08-27 一种由烯烃合成丙位内酯的生产方法 Pending CN103483297A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108794431A (zh) * 2017-04-28 2018-11-13 山东新和成药业有限公司 一种丙烯酸正烷基酯制备丙位内酯的方法
CN108929288A (zh) * 2018-05-28 2018-12-04 盐城市春竹香料有限公司 丙位内酯的制备方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3758514A (en) * 1971-10-15 1973-09-11 Mobil Oil Corp Substituted butyrolactones derived from non conjugated polyolefins

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3758514A (en) * 1971-10-15 1973-09-11 Mobil Oil Corp Substituted butyrolactones derived from non conjugated polyolefins

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
GAGIK G. MELIKYAN 等: "《Organic Reactions》", 31 December 1997 *
WILLIAM E. 等: "Manganese(III) γ-Lactone Annulation with Substituted Acids", 《J. ORG. CHEM.》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108794431A (zh) * 2017-04-28 2018-11-13 山东新和成药业有限公司 一种丙烯酸正烷基酯制备丙位内酯的方法
CN108929288A (zh) * 2018-05-28 2018-12-04 盐城市春竹香料有限公司 丙位内酯的制备方法

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