CN103739465A - 一种1,3-二苯基-2-溴-2-丙烯-1-酮的合成方法 - Google Patents

一种1,3-二苯基-2-溴-2-丙烯-1-酮的合成方法 Download PDF

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CN103739465A
CN103739465A CN201310699137.6A CN201310699137A CN103739465A CN 103739465 A CN103739465 A CN 103739465A CN 201310699137 A CN201310699137 A CN 201310699137A CN 103739465 A CN103739465 A CN 103739465A
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phenylbenzene
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ANHUI RUISAI BIOCHEMICAL TECHNOLOGY Co Ltd
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    • C07C45/00Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/61Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
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    • C07C45/00Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
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    • C07C45/00Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/61Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
    • C07C45/67Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton
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Abstract

本发明涉及一种1,3-二苯基-2-溴-2-丙烯-1-酮的合成方法,其特征在于用最简单易得的苯甲醛和苯乙酮为原料,在无机碱的催化作用下,经羟醛缩合反应生成α,β-不饱和酮,使用卤素通过加成反应得到1,3-二苯基-2,3-二溴-1-丙酮,通过无机碱的作用发生消除反应脱去溴化氢制得1,3-二苯基-2-溴-2-丙烯-1-酮。

Description

一种1,3-二苯基-2-溴-2-丙烯-1-酮的合成方法
技术领域
    本发明属于有机合成技术领域,涉及一种1,3-二苯基-2-溴-2-丙烯-1-酮的有机合成方法。
背景技术
    α-卤代查尔酮是一类重要的有机合成中间体,具有多个反应活性中心,在麦克尔加成反应、光反应、聚合反应及配位化学和超分子化学中具有广泛的应用。此外,许多α-卤代查尔酮及其衍生物还具有许多优异的生物活性,例如:具有抗细菌、抗病毒、抗真菌、消炎、除草等生物活性,因此α-卤代查尔酮类化合物的合成一直是生物医药、农业、食品等方面研究的重要领域。同时利用其独特的结构特征,α-卤代查尔酮作为中间体亦广泛地用于有机合成和药物合成当中。其中α-卤代查尔酮的麦克尔加成反应是其特征反应之一。可以构建多种结构中间体,如三元碳杂环。α-溴代查尔酮是α-卤代查尔酮最常用的一种。该合成工艺具有原料易得、反应条件温和、操作简便等特点。
发明内容
    本发明的目的在于提供一种1,3-二苯基-2-溴-2-丙烯-1-酮的有机合成方法: 用最简单易得的苯甲醛和苯乙酮为原料,在无机碱的催化作用下经羟醛缩合反应生成α,β-不饱和酮。使用卤素通过加成反应得到1,3-二苯基-2,3-二溴-1-丙酮。通过无机碱的作用发生消除反应脱去溴化氢制得1,3-二苯基-2-溴-2-丙烯-1-酮。
1,3-二苯基-2-溴-2-丙烯-1-酮的有机合成方法,包括1,3-二苯基-2-丙烯-1-酮的制备、1,3-二苯基-2,3-二溴-1-丙酮的制备以及1,3-二苯基-2-溴-2-丙烯-1-酮的制备过程。
本发明通过下述方法实现的:
1、1,3-二苯基-2-丙烯-1-酮的制备:室温下向圆底烧瓶中加入1.0份苯甲醛和1.0-1.1份的苯乙酮。然后加入适量的无水甲醇,充分搅拌使其混合均匀,再加入适量 10% 的氢氧化钠溶液,搅拌下在室温时进行反应,一段时间后有大量固体产生,对反应进行TLC跟踪,至苯甲醛完全反应掉时停止反应,对溶液进行抽滤,用正己烷洗涤,然后在空气中干燥。所得产品即为1,3-二苯基-2-丙烯-1-酮,。
2、1,3-二苯基-2,3-二溴-1-丙酮的制备:室温下在圆底烧瓶中,依次加入1.0份1,3-二苯基-2-丙烯-1-酮和适量的CCl4溶液,在恒压漏斗中加入1.0-1.1份的Br2, 避光搅拌下向圆底烧瓶中缓慢滴加Br2,待Br2滴加完后,TLC跟踪至反应完全后停止反应,冷却后置于冰箱上层,当大量晶体析出后,用冷的CCl4洗涤抽滤,然后在空气中避光干燥。即得到1,3-二苯基-2,3-二溴-1-丙酮。
3、1,3-二苯基-2-溴-2-丙烯-1-酮的合成:在圆底烧瓶中,依次加入1.0份1,3-二苯基-2,3-二溴-1-丙酮,1.0-1.2的醋酸钠和适量的乙醇,加热回流TLC跟踪至反应完全后停止反应,用旋转蒸发仪旋去乙醇,加入适量的水和无水乙醚,分液,将下层的水层倒掉,将上层的有机层倒入锥形瓶中,将锥形瓶中的有机相用无水硫酸钠干燥,浓缩得到1,3-二苯基-2-溴-2-丙烯-1-酮。
   1,3-二苯基-2-溴-2-丙烯-1-酮的合成过程反应原理。
具体实施方式
实例1:
1、1,3-二苯基-2-丙烯-1-酮的制备:室温下向250 mL 圆底烧瓶中加入苯甲醛10.61g和苯乙酮13.21g。然后加入100 mL的95% 的乙醇,充分搅拌使其混合均匀,再加入40 mL 10% 的氢氧化钠溶液,搅拌下在室温时进行反应,一段时间后有大量固体产生,对反应进行TLC跟踪,至苯甲醛完全反应掉时停止反应,对溶液进行抽滤,用正己烷洗三遍,然后在空气中干燥,所得产品即为1,3-二苯基-2-丙烯-1-酮17.8g,含量98.2%,收率85.6%。
2、1,3-二苯基-2,3-二溴-1-丙酮的制备:室温下在250 mL的圆底烧瓶中,依次加入1,3-二苯基-2-丙烯-1-酮20.82 g和CCl4 100 mL,在恒压漏斗中加入17.58g的Br2, 避光搅拌下向圆底烧瓶中缓慢滴加Br2,待Br2滴加完后,TLC跟踪至反应完全后停止反应,冷却后置于冰箱上层,当大量晶体析出后,用冷的CCl4洗涤抽滤,然后在空气中避光干燥,即得到1,3-二苯基-2,3-二溴-1-丙酮28.2 g,含量95.7%,收率74.1%。
3、1,3-二苯基-2-溴-2-丙烯-1-酮的合成:在100 mL圆底烧瓶中,依次加入3.42 g1,3-二苯基-2,3-二溴-1-丙酮,0.91 g (11.13 mmol) 的醋酸钠和95% 的乙醇26 mL,加热回流TLC跟踪至反应完全后停止反应,用旋转蒸发仪旋去乙醇,加入适量的水和无水乙醚,分液,将下层的水层倒掉,将上层的有机层倒入锥形瓶中,将锥形瓶中的有机相用无水硫酸钠干燥,浓缩得到1,3-二苯基-2-溴-2-丙烯-1-酮22.2g,含量97.3%,收率76.0%。
实例2:
1、1,3-二苯基-2-丙烯-1-酮的制备:室温下向250 mL 圆底烧瓶中加入苯甲醛10.63g和苯乙酮13.22g。然后加入100 mL的95% 的乙醇,充分搅拌使其混合均匀,再加入40 mL 10% 的氢氧化钠溶液,搅拌下在室温时进行反应,一段时间后有大量固体产生,对反应进行TLC跟踪,至苯甲醛完全反应掉时停止反应,对溶液进行抽滤,用正己烷洗三遍,然后在空气中干燥,所得产品即为1,3-二苯基-2-丙烯-1-酮18.4 g,含量96.3%,收率85.9%。
2、1,3-二苯基-2,3-二溴-1-丙酮的制备:室温下在250 mL的圆底烧瓶中,依次加入1,3-二苯基-2-丙烯-1-酮20.85 g和CCl4 100 mL,在恒压漏斗中加入17.61g (0.11 mol)的Br2, 避光搅拌下向圆底烧瓶中缓慢滴加Br2,待Br2滴加完后,TLC跟踪至反应完全后停止反应,冷却后置于冰箱上层,当大量晶体析出后,用冷的CCl4洗涤抽滤,然后在空气中避光干燥。即得到1,3-二苯基-2,3-二溴-1-丙酮28.9 g,含量96.6%,收率77.1%。
3、1,3-二苯基-2-溴-2-丙烯-1-酮的合成:在100 mL圆底烧瓶中,依次加入3.43 g 1,3-二苯基-2,3-二溴-1-丙酮,0.93 g的醋酸钠和95% 的乙醇26 mL,加热回流TLC跟踪至反应完全后停止反应,用旋转蒸发仪旋去乙醇,加入适量的水和无水乙醚,分液,将下层的水层倒掉,将上层的有机层倒入锥形瓶中,将锥形瓶中的有机相用无水硫酸钠干燥,浓缩得到1,3-二苯基-2-溴-2-丙烯-1-酮22.5g,含量98.2%,收率77.0%。

Claims (4)

1.一种1,3-二苯基-2-溴-2-丙烯-1-酮的合成方法,其特征在于使用苯甲醛和苯乙酮为原料,在无机碱的催化作用下经羟醛缩合反应制备α,β-不饱和酮,使用卤素通过加成反应得到1,3-二苯基-2,3-二溴-1-丙酮,通过无机碱的作用发生消除反应脱去溴化氢制得1,3-二苯基-2-溴-2-丙烯-1-酮。
2.按照权利要求1所述的1,3-二苯基-2-溴-2-丙烯-1-酮的合成方法,其特征在于无机碱为氢氧化钠,或氢氧化钾,无机碱说的浓度为10%的水溶液。
3.按照权利要求1所述的1,3-二苯基-2-溴-2-丙烯-1-酮的合成方法,其特征在于加成反应所使用的卤素为溴素。
4.按照权利要求1所述的1,3-二苯基-2-溴-2-丙烯-1-酮的合成方法,其特征在于消除反应所使用的无机碱为醋酸钠。
CN201310699137.6A 2013-12-19 2013-12-19 一种1,3-二苯基-2-溴-2-丙烯-1-酮的合成方法 Pending CN103739465A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104987284A (zh) * 2015-06-16 2015-10-21 天长市天佳化工科技有限公司 一种有机非线性光学化合物二溴查耳酮的合成方法
US20220145179A1 (en) * 2020-11-12 2022-05-12 Saudi Arabian Oil Company Synthesis of aryl 1-(methoxymethyl) vinyl ketones and their use as inhibitors of mild steel corrosion

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104987284A (zh) * 2015-06-16 2015-10-21 天长市天佳化工科技有限公司 一种有机非线性光学化合物二溴查耳酮的合成方法
US20220145179A1 (en) * 2020-11-12 2022-05-12 Saudi Arabian Oil Company Synthesis of aryl 1-(methoxymethyl) vinyl ketones and their use as inhibitors of mild steel corrosion

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Application publication date: 20140423