CN106349102B - 间位烷基偶氮芳香化合物的制备方法 - Google Patents

间位烷基偶氮芳香化合物的制备方法 Download PDF

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CN106349102B
CN106349102B CN201610736330.6A CN201610736330A CN106349102B CN 106349102 B CN106349102 B CN 106349102B CN 201610736330 A CN201610736330 A CN 201610736330A CN 106349102 B CN106349102 B CN 106349102B
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aromatic compound
azo aromatic
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bromoalkane
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CN106349102A (zh
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李刚
杨素玲
侯琳琳
赵建英
郭克晓
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Anyang Normal University
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    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C245/00Compounds containing chains of at least two nitrogen atoms with at least one nitrogen-to-nitrogen multiple bond
    • C07C245/02Azo compounds, i.e. compounds having the free valencies of —N=N— groups attached to different atoms, e.g. diazohydroxides
    • C07C245/06Azo compounds, i.e. compounds having the free valencies of —N=N— groups attached to different atoms, e.g. diazohydroxides with nitrogen atoms of azo groups bound to carbon atoms of six-membered aromatic rings
    • C07C245/08Azo compounds, i.e. compounds having the free valencies of —N=N— groups attached to different atoms, e.g. diazohydroxides with nitrogen atoms of azo groups bound to carbon atoms of six-membered aromatic rings with the two nitrogen atoms of azo groups bound to carbon atoms of six-membered aromatic rings, e.g. azobenzene
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    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D309/00Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings
    • C07D309/02Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having no double bonds between ring members or between ring members and non-ring members
    • C07D309/04Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having no double bonds between ring members or between ring members and non-ring members with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms

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  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
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Abstract

间位烷基偶氮芳香化合物的制备方法,反应过程如下:将偶氮芳香化合物、溴代烷、催化剂、添加剂、碱以及溶剂直接加入反应装置中,所述的催化剂为二氯双(4‑甲基异丙基苯基)钌;碱为碳酸铯或碳酸钠或醋酸钾,所述添加剂为三甲基乙酸或2,4,6‑三甲基苯甲酸;所述溶剂为1,4‑二氧六环或甲苯或四氢呋喃,搅拌加热温度至100℃‑130℃,反应24小时,分离产物得到式Ⅲ的结构间位烷基偶氮芳香化合物。本发明原料安全可靠,不易分解、爆炸,生产过程安全,原料易得,廉价。

Description

间位烷基偶氮芳香化合物的制备方法
技术领域
本发明涉及一种间位烷基偶氮芳香化合物的制备方法,属于化学领域。
背景技术
偶氮芳香化合物是一类具有独特结构的重要化合物,广泛用于染料、光敏材料、食品添加剂以及诊疗试剂等。偶氮芳香化合物上取代基的种类、数量以及位置等的不同,都产生不同的物理化学性质。发展和探索高效地制备各种结构偶氮芳香化合物新方法一直是个研究热点。截至目前为止,人类已发展很多种合成不同偶氮芳香化合物的有效方法,对称偶氮芳香化合物合成方法简单,易于合成,只需硝基芳香化合物还原以及芳基胺氧化就可以得到;而不对称偶氮芳香化合物的合成需要使用亚硝基化合物或芳基重氮盐等化合物来制备,且通常还需要使用间位烷基苯胺。 亚硝基化合物不但价格昂贵,而且见光易分解; 芳基重氮盐不但室温易爆炸分解,而且只能与富电子的芳香化合物反应, 具有较大的局限性; 并且间位烷基苯胺用传统方法非常难于合成,其来源严重受限,因此不论何种方法,对于间位烷基偶氮芳香化合物都是难于合成的。
发明内容
本发明的目的在于提供一种间位烷基偶氮芳香化合物的制备方法。
本发明所提供一种间位烷基偶氮芳香化合物的制备方法,所述间位烷基偶氮芳香化合物为式Ⅲ结构。采用式Ⅰ结构的偶氮芳香化合物与式Ⅱ结构的溴代烷反应得到所述的间位烷基偶氮芳香化合物,所述溴代烷为二级和三级溴代烷,反应式如下:
其中: R为氢或甲氧基或甲基或苯基或氯或溴;R1,R2,R3为烷基或氢或酯基或醚;反应过程如下:将Ⅰ结构的偶氮芳香化合物、式Ⅱ结构的溴代烷、催化剂、添加剂、碱以及溶剂直接加入反应装置中,所述催化剂为二氯双(4-甲基异丙基苯基)钌;所述碱为碳酸铯或碳酸钠或醋酸钾,所述添加剂为三甲基乙酸或2,4,6-三甲基苯甲酸;所述溶剂为1,4-二氧六环或甲苯或四氢呋喃,搅拌加热至100℃-130℃,反应24小时,分离得到式Ⅲ的结构间位烷基偶氮芳香化合物,进一步的,所述的溴代烷的摩尔用量为偶氮芳香化合物摩尔数的1.2-5倍。
本发明的积极有益技术效果在于:一是原料安全可靠,不易分解、爆炸,生产过程安全;二是原料易得,廉价。
具体实施方式
为了更充分的解释本发明的实施,提供本发明的实施实例,这些实施实例仅仅是对本发明的阐述,不限制本发明的范围。
实施例1:
在20mL耐压反应管中加入36mg (0.2mmol) 偶氮苯,90mg(0.6 mmol) 3-溴戊烷,55mg(0.4mmol)碳酸钾,6mg(0.06mmol)三甲基乙酸, 1.5mL 1,4-二氧六环,氮气条件下密封,加热到120℃反应,搅拌24小时,反应后,柱色谱分离,得目标产物3-(3-戊基)偶氮苯38mg,产率为76%。
实施例2:
在20mL耐压反应管中加入42mg (0.2mmol) 4,4’-二甲基偶氮苯,90mg(0.6 mmol)3-溴戊烷,55mg(0.4mmol)碳酸钾,6mg(0.06mmol)三甲基乙酸, 1.5mL 1,4-二氧六环,氮气条件下密封,加热到120℃反应,搅拌24小时,反应后,柱色谱分离,得目标产物4,4’-二甲基3-(3-戊基)偶氮苯34mg,产率为60%。
实施例3:
在20mL耐压反应管中加入36mg (0.2mmol) 偶氮苯,90mg(0.6 mmol) 2-溴戊烷,55mg(0.4mmol)碳酸钾,6mg(0.06mmol)三甲基乙酸1.5mL, 1,4-二氧六环,氮气条件下密封,加热到120℃反应,搅拌24小时,反应后,柱色谱分离,得目标产物3-(2-戊基)偶氮苯32mg,产率为64%。
实施例4:
在20mL耐压反应管中加入36mg (0.2mmol) 偶氮苯,82mg(0.6 mmol) 溴代叔丁烷,55mg(0.4mmol)碳酸钾,6mg(0.06mmol)三甲基乙酸,1.5mL 1,4-二氧六环,氮气条件下密封,加热到120℃反应,搅拌24小时,反应后,柱色谱分离,得目标产物3-叔丁基偶氮苯28mg,产率为58%。
下表为采用本发明的技术方案合成的产物及对应的产率:
在详细说明本发明的实施方式之后,熟悉该项技术的人士可清楚地了解,在不脱离上述申请专利范围与精神下可进行各种变化与修改,凡依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰,均属于本发明技术方案的范围,且本发明亦不受限于说明书中所举实例的实施方式。

Claims (2)

1.间位烷基偶氮芳香化合物的制备方法,所述的间位烷基偶氮芳香化合物为式Ⅲ的结构,其特征在于:采用式Ⅰ结构的偶氮芳香化合物与式Ⅱ结构的溴代烷反应得到所述的间位烷基偶氮芳香化合物,所述的溴代烷为二级和三级溴代烷,反应式如下:
其中: R为氢或甲氧基或甲基或苯基或氯或溴;R1,R2,R3为烷基或氢或酯基;反应过程如下:将Ⅰ结构的偶氮芳香化合物、式Ⅱ结构的溴代烷、催化剂、添加剂、碱以及溶剂直接加入反应装置中,所述的催化剂为二氯双(4-甲基异丙基苯基)钌;碱为碳酸铯或碳酸钠或醋酸钾,所述添加剂为三甲基乙酸或2,4,6-三甲基苯甲酸;所述溶剂为1,4-二氧六环或甲苯或四氢呋喃,搅拌加热温度至100℃-130℃,反应24小时,分离产物得到式Ⅲ的结构间位烷基偶氮芳香化合物。
2.根据权利要求1所述的间位烷基偶氮芳香化合物的制备方法,其特征在于:所述的溴代烷的摩尔用量为偶氮芳香化合物摩尔数的1.2-5倍。
CN201610736330.6A 2016-08-29 2016-08-29 间位烷基偶氮芳香化合物的制备方法 Expired - Fee Related CN106349102B (zh)

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