CN104086488B - 一种2,4,6-三取代嘧啶类化合物的合成方法 - Google Patents

一种2,4,6-三取代嘧啶类化合物的合成方法 Download PDF

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CN104086488B
CN104086488B CN201410345275.9A CN201410345275A CN104086488B CN 104086488 B CN104086488 B CN 104086488B CN 201410345275 A CN201410345275 A CN 201410345275A CN 104086488 B CN104086488 B CN 104086488B
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pyrimidine compounds
synthetic method
trisubstituted pyrimidine
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cinnamophenone
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CN104086488A (zh
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刘青锋
张志国
刘统信
时蕾
张贵生
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Henan Normal University
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    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D239/00Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
    • C07D239/02Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
    • C07D239/24Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
    • C07D239/26Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more 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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Abstract

本发明公开了一种2,4,6-三取代嘧啶类化合物的合成方法。本发明的技术方案要点为:一种2,4,6-三取代嘧啶类化合物的合成方法,以脒和查尔酮为原料,以溴化亚铜/2,2’-联吡啶为催化体系,于90℃在二甲亚砜溶剂中一步反应即制得2,4,6-三取代嘧啶类化合物。本发明的合成方法中,反应步骤仅有一步,过程简单,不使用强碱或复杂底物为原料;本发明步骤少,工艺难度低,腐蚀小,投资设备少,容易操作,有利于大规模工业化生产。

Description

一种2,4,6-三取代嘧啶类化合物的合成方法
技术领域
本发明属于有机合成技术领域,具体涉及一种2,4,6-三取代嘧啶类化合物的合成方法。
背景技术
2,4,6-三取代嘧啶类化合物具有强大的生物活性,以其作为母核结构的许多化合物在抗疟疾、癌症等疾病治疗方面有广泛的应用,同时作为药物合成的中间体,也广泛地应用在有机电致发光材料中。1951年Dodson(J.Org.Chem. 1951,16,461-465)使用苯甲脒和查尔酮在氢氧化钾催化下获得了2,4,6-三取代嘧啶类化合物。随后也有文献(TetrahedronLett. 2004,45,4611-4613;Bull.KoreanChem.Soc. 2003,24,1575-1578;J.Comb.Chem. 2006,8,646-648)报道了2,4,6-三取代嘧啶类化合物的合成,但是在这些方法中,存在着腐蚀性强、底物复杂、产率低、操作麻烦等特点,很难大范围推广应用。
发明内容
本发明解决的技术问题是提供了一种反应过程简单且易于操作的2,4,6-三取代嘧啶类化合物的合成方法,以替代传统强腐蚀性、操作繁琐的合成方法。
本发明的技术方案为:一种2,4,6-三取代嘧啶类化合物的合成方法,其特征在于:以脒和查尔酮为原料,以溴化亚铜/2,2’-联吡啶为催化体系,于90℃在二甲亚砜溶剂中一步反应即制得2,4,6-三取代嘧啶类化合物,具体的反应方程式为:
其中取代基R1选自,取代基R2和R3选自H、CH3、OCH3或Cl,催化剂为溴化亚铜/2,2’-联吡啶,溶剂为二甲亚砜,温度为90℃。
根据以上方法,合成的化合物为:
综上所述,本发明的合成方法中,反应步骤仅有一步,过程简单,不使用强碱或复杂底物为原料;本发明步骤少,工艺难度低,腐蚀小,投资设备少,容易操作,有利于大规模工业化生产。
具体实施方法
以下通过实施例对本发明的上述内容做进一步详细说明,但不应该将此理解为本发明上述主题的范围仅限于以下的实施例,凡基于本发明上述内容实现的技术均属于本发明的范围。
实施例
在25mL圆底烧瓶中加入1.0mmol查尔酮和1.2mmol脒,然后加入3.0mL二甲亚砜、1.0mmol溴化亚铜和2.0mmol2,2’-联吡啶,在90℃条件下进行反应,反应过程使用TLC监测,反应结束后,使用柱层析纯化,即制得2,4,6-三取代嘧啶类化合物,依据此方法通过选取不同的原料分别合成了以下几种化合物:
(1)2,4,6-三苯基嘧啶
1HNMR(CDCl3,400MHz):8.76-8.73(m,2H),8.32-8.28(m,4H),8.02(s,1H),7.60-7.51(m,9H).13CNMR(CDCl3,100MHz):164.9,164.6,138.2,137.6,130.9,130.8,129.1,128.6,128.5,127.4,110.5.收率(基于转化率):75%;查尔酮转化率:80%。
(2)4,6-二苯基-2-对甲基苯基嘧啶
1HNMR(CDCl3,400MHz):8.63(d,J=8.0Hz,2H),8.31-8.27(m,4H),8.00(s,1H),7.59-7.54(m,6H),7.35(d,J=8.0Hz,2H),2.46(s,3H);13CNMR(CDCl3,100MHz):164.8,164.7,140.9,137.9,135.6,130.9,129.4,129.0,128.6,127.4,110.2,21.7.收率(基于转化率):80%;查尔酮转化率:60%。
(3)4,6-二苯基-2-对溴苯基嘧啶
1HNMR(CDCl3,400MHz):8.61(d,J=12.0Hz,2H),8.29-8.27(m,4H),8.04(s,1H),7.66(d,J=8.0Hz,2H),7.67-7.56(m,6H);13CNMR(CDCl3,100MHz):165.1,137.6,137.3,131.8,131.1,130.3,129.2,127.5,125.6,110.8.收率(基于转化率):86%;查尔酮转化率:58%。
(4)4-对甲基苯基-2,6-二苯基嘧啶
1HNMR(CDCl3,400MHz):8.73(dd,J=2.0Hz,J=7.6Hz,2H),8.73(dd,J=2.0Hz,J=7.6Hz,2H),8.21(d,J=8.4Hz,2H),8.00(s,1H),7.58-7.52(m,6H),7.37(d,J=2.0Hz,2H).收率(基于转化率):95%;查尔酮转化率:62%。
(5)4-对甲氧基苯基-2,6-二苯基嘧啶
1HNMR(CDCl3,400MHz):8.73(d,J=4.0Hz,2H),8.28(d,J=8.0Hz,4H),7.95(s,1H),7.57-7.50(m,6H),7.07(d,J=8.0Hz,2H);13CNMR(CDCl3,100MHz):164.6,164.3,164.1,162.1,138.3,137.7,130.8,130.7,130.0,129.1,129.0,128.6,128.5,127.4,114.4,109.6.收率(基于转化率):98%;查尔酮转化率:47%。
(6)4-对氯苯基-2,6-二苯基嘧啶
1HNMR(CDCl3,400MHz):8.73(d,J=4.0Hz,2H),8.28(d,J=8.0Hz,4H),7.95(s,1H),7.57-7.50(m,6H),7.07(d,J=8.0Hz,2H);13CNMR(CDCl3,100MHz):164.6,164.3,164.1,162.1,138.3,137.7,130.8,130.7,130.0,129.1,129.0,128.6,128.5,127.4,114.4,109.6.收率(基于转化率):88%;查尔酮转化率:52%。
以上显示和描述了本发明的基本原理,主要特征和优点,在不脱离本发明精神和范围的前提下,本发明还有各种变化和改进,这些变化和改进都落入要求保护的本发明的范围。

Claims (2)

1.一种2,4,6-三取代嘧啶类化合物的合成方法,其特征在于:以脒和查尔酮或取代查尔酮为原料,以溴化亚铜/2,2’-联吡啶为催化体系,于90℃在二甲亚砜溶剂中一步反应即制得2,4,6-三取代嘧啶类化合物,具体的反应方程式为:
其中取代基R1选自,取代基R2和R3选自H、CH3、OCH3或Cl,催化剂为溴化亚铜/2,2’-联吡啶,溶剂为二甲亚砜,温度为90℃。
2.根据权利要求1所述的2,4,6-三取代嘧啶类化合物的合成方法,其特征在于:合成的化合物为:
CN201410345275.9A 2014-07-21 2014-07-21 一种2,4,6-三取代嘧啶类化合物的合成方法 Expired - Fee Related CN104086488B (zh)

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CN108929276B (zh) * 2017-05-25 2021-08-31 湖南大学 一种由甲基酮类化合物与腈类化合物制备嘧啶类化合物的方法
CN108409672B (zh) * 2018-03-28 2020-01-10 安徽师范大学 一种铜盐催化合成多取代嘧啶的方法

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