CN102276617A - 一种多取代吡喃并[3,2-b]吡喃衍生物的合成方法 - Google Patents

一种多取代吡喃并[3,2-b]吡喃衍生物的合成方法 Download PDF

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CN102276617A
CN102276617A CN201110170142A CN201110170142A CN102276617A CN 102276617 A CN102276617 A CN 102276617A CN 201110170142 A CN201110170142 A CN 201110170142A CN 201110170142 A CN201110170142 A CN 201110170142A CN 102276617 A CN102276617 A CN 102276617A
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李玉玲
杜百祥
赵波
蔡干
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Xuzhou Normal University
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Abstract

本发明涉及一种多取代吡喃并[3,2-b]吡喃衍生物的合成,具体是涉及2-氨基-4,8-二氢-6-甲基-8-氧代-4-苯基吡喃并[3,2-b]吡喃衍生物的合成,是以醛、丙二腈及其衍生物和5-羟基-2-甲基-4H-吡喃-4-酮化合物为原料,经三组分一锅法一步反应生成。合成路线简捷,条件温和,总收率达到80%以上。

Description

一种多取代吡喃并[3,2-b]吡喃衍生物的合成方法
技术领域
本发明属于有机合成技术领域,涉及2-氨基-4,8-二氢-6-甲基-8-氧代-4-苯基吡喃并[3,2-b]吡喃衍生物的有机合成方法。 
背景技术
吡喃及其衍生物具有广泛的生物活性和药理活性,例如抗菌活性,抗骨质疏松活性,抗氧化活性,温和的麻醉活性,抗高血压活性,抗凝固活性,抗真菌活性,抗肺结核活性,抗过敏和抗癌等活性。因此吡喃衍生物一直是化学工作者和药物科学工作者关注的一个热点。但对于吡喃并[3,2-b]吡喃衍生物的合成报道很少。2007年有人报道通过重排反应制备吡喃并吡喃化合物(Niethe,A.Heterocycles 2007,74:803-817),2010年Chakraborty等报道利用烯糖衍生物与各种酚化合物在三氯化铟催化下合成手性吡喃并吡喃化合物(Soumik Roy Tetrahedron 2010,66:8512-8521),Anary-Abbasinejad等则通过4-羟基香豆素或4-羟基-6-甲基吡喃酮与乙炔的二羧酸酯反应构建吡喃并吡喃骨架(Anary-Abbasinejad,M.J.Braz.Chem.Soc.2010,21:319-U212)。但在离子液体中通过醛、5-羟基-2-甲基-4H-吡喃-4-酮和活泼亚甲基化合物为原料合成该类化合物还未见报道。 
发明内容
本发明的目的在于提供一种合成2-氨基-4,8-二氢-6-甲基-8-氧代-4-苯基吡喃并[3,2-b]吡喃衍生物的方法:醛、5-羟基-2-甲基-4H-吡喃-4-酮和活泼亚甲基化合物为原料,按摩尔比1∶1∶1在离子液体中经三组分一锅法一步反应生成(如图1所示)。本发明在合成吡喃并[3,2-b]吡喃衍生物过程中引入离子液体,提供一种温和高效,环境友好,应用范围广,产率高且离子液体可循环使用的合成方法。 
本发明通过下述方法实现的:在5毫升离子液体中加入1毫摩尔的醛,1毫摩尔的5-羟基-2-甲基-4H-吡喃-4-酮和1毫摩尔的活泼亚甲基化合物,在80℃下反应3-20小时,即得到相应的2-氨基-4,8-二氢-6-甲基-8-氧代-4-苯基吡喃并[3,2-b]吡喃衍生物。 
所述的离子液体为[Bmim]Br或[Bmim]BF4
所述的醛为芳香醛、脂肪醛或杂环醛。 
所述的活泼亚甲基化合物为为丙二腈、氰乙酸酯、氰乙酰胺。 
所述的离子液体制备参见文献(Park,S.J.Org.Chem.2001,66:8395-8401)。 
与文献中已有方法相比,本发明具有以下优点: 
本发明在合成吡喃并[3,2-b]吡喃衍生物的过程中引入离子液体,是一种绿色合成方法。离子液体具有蒸汽压低,毒性小、热稳定性好、不燃烧和不爆炸、溶解性能独特,反应产物分离简单等优点。且离子液体可循环使用,大大降低了成本。 
具体实施方式
下面结合附图1及实施例对本发明作进一步描述: 
实施例1: 
2-氨基-4,8-二氢-6-甲基-8-氧代-4-(4-氯苯基)吡喃并[3,2-b]吡喃-3-氰的制备:在5毫升离子液体[Bmim]BF4中加入1毫摩尔的4-氯苯甲醛(0.14g),1毫摩尔的5-羟基-2-甲基-4H-吡喃-4-酮(0.13g)和1毫摩尔的丙二腈(0.07g),在80℃下反应6小时,TLC跟踪监测,反应结束后,直接过滤,产物用少量水洗涤,干燥后用95%乙醇重结晶即得到相应的2-氨基-4,8-二氢-6-甲基-8-氧代-4-(4-氯苯基)吡喃并[3,2-b]吡喃-3-氰类衍生物(0.27g,产率85%)。本品为白色结晶,mp:234~236℃。 
实施例2: 
2-氨基-4,8-二氢-6-甲基-8-氧代-4-(4-氯苯基)吡喃并[3,2-b]吡喃-3-甲酸甲酯的制备:在5毫升离子液体[Bmim]BF4中加入1毫摩尔的4-氯苯甲醛(0.14g),1毫摩尔的5-羟基-2-甲基-4H-吡喃-4-酮(0.13g)和1毫摩尔的氰乙酸甲酯(0.10g),在80℃下反应15小时,TLC跟踪监测,反应结束后,直接过滤,产物用少量水洗涤,干燥后用95%乙醇重结晶即得到相应的2-氨基-4,8-二氢-6-甲基-8-氧代-4-(4-氯苯基)吡喃并[3,2-b]吡喃-3-甲酸甲酯衍生物(0.29g,产率84%)。本品为白色结晶,mp:207~209℃。 
实施例3: 
2-氨基-4,8-二氢-6-甲基-8-氧代-4-(4-氯苯基)吡喃并[3,2-b]吡喃-3-甲酰胺的制备:在5毫升离子液体[Bmim]BF4中加入1毫摩尔的4-氯苯甲醛(0.14g),1毫摩尔的5-羟基-2-甲基-4H-吡喃-4-酮(0.13g)和1毫摩尔的氰乙酰胺(0.08g),在80℃下反应20小时,TLC跟踪监测,反应结束后,直接过滤,产物用少量水洗涤,干燥后用95%乙醇重结晶即得到相应的2-氨基-4,8-二氢-6-甲基-8-氧代-4-(4-氯苯基)吡喃并[3,2-b]吡喃-3-甲酰胺衍生物(0.29g,产率87%)。本品为白色结晶,mp:201~203℃。 
实施例1-22的反应原料,反应条件及产率见表1。 
表1实施例1-22的反应原料,反应条件及产率 
Figure BSA00000523163600031
表1中,实施例1-10中反应的活泼亚甲基化合物为丙二腈,实施例11-18中反应的活泼亚甲基化合物为氰乙酸酯、实施例19-22中反应的活泼亚甲基化合物为氰乙酰胺。 
表2为实施例1中离子液体的循环使用结果。 
表2离子液体的循环使用 
  编号   循环次数   产率
  1   1   85
  2   2   85
  3   3   83
  4   4   81
由表1和表2可知,本发明的方法原料易得,操作简单安全,反应条件温和、收率高,后处理简单,原子经济性高,而且离子液体能够重复使用,环境污染小,因而具有极大的实施价值和潜在社会经济效益。 

Claims (5)

1.本发明涉及2-氨基-4,8-二氢-6-甲基-8-氧代-4-苯基吡喃并[3,2-b]吡喃衍生物的合成,是以醛、5-羟基-2-甲基-4H-吡喃-4-酮和活泼亚甲基化合物为原料,经三组分一锅法一步反应生成。
2.按照权利要求(1)所述的吡喃并[3,2-b]吡喃衍生物的合成方法,其特征是合成的反应条件是醛、5-羟基-2-甲基-4H-吡喃-4-酮和1,3-二羰基化合物在离子液体中反应,适宜的条件是常压、80℃和反应6~12小时,原料的摩尔比为醛∶5-羟基-2-甲基-4H-吡喃-4-酮∶活泼亚甲基化合物=1∶1∶1。
3.按照权利要求(1)所述的吡喃并[3,2-b]吡喃衍生物的合成方法,其特征在于所述的离子液体为[Bmim]Br或[Bmim]BF4
4.按照权利要求(1)所述的吡喃并[3,2-b]吡喃衍生物的合成方法,其特征在于所述的醛为芳香醛、脂肪醛或杂环醛。
5.按照权利要求(1)所述的吡喃并[3,2-b]吡喃衍生物的合成方法,其特征在于所述的活泼亚甲基化合物为丙二腈、氰乙酸酯、氰乙酰胺。
CN201110170142A 2011-06-23 2011-06-23 一种多取代吡喃并[3,2-b]吡喃衍生物的合成方法 Pending CN102276617A (zh)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103848842A (zh) * 2012-12-04 2014-06-11 江苏师范大学 一种离子液体中曲酸衍生物的合成方法
CN105622589A (zh) * 2014-10-24 2016-06-01 江苏师范大学 一种多取代吡喃-4-酮衍生物的合成方法
CN105906646A (zh) * 2016-05-17 2016-08-31 安徽工业大学 一种碱性离子液体催化制备吡喃并[4,3-b]吡喃衍生物的方法

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JP2003277382A (ja) * 2002-03-22 2003-10-02 Sumitomo Chem Co Ltd 2,3−ジヒドロ−7−メチル−2−(1−メチルエチル)−4H,5H−ピラノ[4,3−b]ピラン−4,5−ジオンの製造法

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103848842A (zh) * 2012-12-04 2014-06-11 江苏师范大学 一种离子液体中曲酸衍生物的合成方法
CN105622589A (zh) * 2014-10-24 2016-06-01 江苏师范大学 一种多取代吡喃-4-酮衍生物的合成方法
CN105906646A (zh) * 2016-05-17 2016-08-31 安徽工业大学 一种碱性离子液体催化制备吡喃并[4,3-b]吡喃衍生物的方法
CN105906646B (zh) * 2016-05-17 2018-04-20 安徽工业大学 一种碱性离子液体催化制备吡喃并[4,3‑b]吡喃衍生物的方法

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