ethyl 2-methyl-4-phenyl-1,4-dihydrobenzo[4,5]imidazo[1,2-a]pyrimidine-3-carboxylate | 313960-23-5

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并咪唑类
• 英文名称: ethyl 2-methyl-4-phenyl-1,4-dihydrobenzo[4,5]imidazo[1,2-a]pyrimidine-3-carboxylate
• 英文别名: ethyl 2-methyl-4-phenyl-1,4-dihydropyrimido[1,2-a]benzimidazole-3-carboxylate
• CAS: 313960-23-5
• 化学式: C₂₀H₁₉N₃O₂
• 分子量: 333.39
• InChiKey: HBGHEVXQPYEDCR-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.9
• 重原子数：
  25
• 可旋转键数：
  4
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.2
• 拓扑面积：
  56.2
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  2-氨基苯并咪唑 、 2-苯亚甲基乙酰乙酸乙酯 在 C₈H₁₅N₂O₃S⁽¹⁺⁾*HO₄S^(1-) 作用下， 以 neat (no solvent) 为溶剂， 生成 ethyl 2-methyl-4-phenyl-1,4-dihydrobenzo[4,5]imidazo[1,2-a]pyrimidine-3-carboxylate
  参考文献：
  名称：

  在无金属和无溶剂条件下合成苯并[4,5]咪唑并[1,2-a]嘧啶和2,3-二氢喹唑啉-4(1H)-酮以减少废物产生†

  摘要：

  发现 Brønsted 酸性离子液体是合成苯并[4,5]咪唑并[1,2 - a ]嘧啶和 2,3-二氢喹唑啉-4(1 H )-酮的有效且可回收的催化剂。该反应在广泛的底物范围内顺利进行，在原子经济途径下以良好至优异的产率提供了预期的产物。低成本的可回收催化剂、无金属和无溶剂条件以及易于产品分离是解决合成药物中痕量金属污染问题的突出优势。

  DOI：

  10.1039/c8ra07256f

文献信息

• An efficient and practical synthesis of benzazolo[2,1-b]quinazolinones and triazolo[2,1-b]quinazolinones catalyzed by nano-sized NS-C4(DABCO-SO3H)2)·4Cl
  作者：Omid Goli-Jolodar、Farhad Shirini

  DOI：10.1007/s13738-017-1164-3

  日期：2017.11

  In this study, 4,4′-(butane-1,4-diyl)bis(1-sulfo-1,4-diazabicyclo[2.2.2]octane-1,4-diium)tetrachloride (NS-C4(DABCO-SO3H)2)·4Cl is used as a nano-sized Brönsted acid catalyst for the efficient and preferment synthesis of benzazolo[2,1-b]quinazolinones and triazolo[2,1-b]quinazolinones derivatives. This protocol has many advantages including mild reaction conditions, acceptable reaction times, high

  在这项研究中，4,4'-（butane-1,4-diyl）bis（1-sulfo-1,4-diazabicyclo [2.2.2] octane-1,4-diium）tetrachloride（NS-C 4（DABCO -SO 3 H）2）·4Cl用作纳米级布朗斯台德酸催化剂，可高效，优选地合成苯并[2,1- b ]喹唑啉酮和三唑并[2,1- b ]喹唑啉酮衍生物。该方案具有许多优点，包括温和的反应条件，可接受的反应时间，高收率和产物的后处理容易以及催化剂的可重复使用性。
• α-Zirconium Sulfophenylphosphonate as a Catalyst for the Synthesis of 3,4-Dihydropyrimidin-2(1H)-One Derivatives Under Solvent Free Conditions
  作者：Ornelio Rosati、Massimo Curini、Francesca Montanari、Morena Nocchetti、Salvatore Genovese

  DOI：10.1007/s10562-011-0604-4

  日期：2011.6

  4-Dihydropyrimidin-2(1H)-one derivatives were synthesized using layered α-zirconium sulfophenylphosphonate as a recyclable heterogeneous catalyst. Several classes of reagents, such as functionalized aromatic and aliphatic aldehydes, β-dicarbonyl derivatives and 2-aminobenzimidazole, were used to synthesize different 3,4-dihydropyrimidin-2(1H)-one derivatives under solvent free conditions.Graphical Abstract

  摘要 以层状 α-磺基苯基膦酸锆为可回收的多相催化剂，合成了 3,4-二氢嘧啶-2(1H)-one 衍生物。几类试剂，如官能化的芳香醛和脂肪醛、β-二羰基衍生物和 2-氨基苯并咪唑，用于在无溶剂条件下合成不同的 3,4-二氢嘧啶-2(1H)-one 衍生物。图形摘要
• Poly(vinylpyrrolidonium) perchlorate catalyzed one-pot synthesis of tricyclic dihydropyrimidine derivatives
  作者：Masoumeh Abedini、Farhad Shirini、Maryam Mousapour、Omid Goli Jolodar

  DOI：10.1007/s11164-016-2456-4

  日期：2016.7

  A simple and efficient procedure for the synthesis of benzo[4,5]imidazo[1,2-α]pyrimidine and 2-amino-4-substituted-1,4-dihydrobenzo[4,5]imidazolo[1,2-α]pyrimidine-3-carbonitrile derivatives using poly(vinylpyrrolidonium) perchlorate [PVPH]ClO4} as a newly reported, modified polymeric catalyst is reported. Some of the advantages of this novel synthetic method are: easy preparation of the catalyst,

  一种简单有效的合成苯并[4,5]咪唑并[1,2- α ]嘧啶和2-氨基-4-取代的1,4-二氢苯并[4,5]咪唑并[1,2- α]的方法报道了使用聚（乙烯基吡咯烷鎓）高氯酸盐[PVPH] ClO 4 }作为新报道的改性聚合物催化剂的嘧啶-3-腈衍生物。这种新颖的合成方法的一些优点是：容易制备催化剂，简单且容易进行后处理，反应时间短，产物的产率高至优异以及催化剂的可重复使用性。
• Microwave-assisted efficient synthesis of benzo[4,5]imidazo[1,2-a]-pyrimidine derivatives in water under catalyst-free conditions
  作者：Shujiang Tu、Qingqing Shao、Dianxiang Zhou、Longji Cao、Feng Shi、Chunmei Li

  DOI：10.1002/jhet.5570440625

  日期：2007.11

  2-a]pyrimidine derivatives were synthesized via the three-component reaction of aldehyde, β-dicarbonyl compound and 2-aminobenzimidazole in water under microwave irradiation and without catalyst conditions. The new protocol has the advantages of higher yield, lower cost, reduced environment impact, wider scope and convenient procedure.

  苯并[4,5]咪唑并[1,2- a ]嘧啶衍生物是通过醛，β-二羰基化合物和2-氨基苯并咪唑在微波辐射下且无催化剂条件下在水中进行三组分反应而合成的。新协议具有产量高，成本低，对环境影响小，适用范围广，操作方便等优点。
• Three-component synthesis of 4-aryl-1<i>H</i>-pyrimido[1,2-<i>a</i>]benzimidazole derivatives in ionic liquid
  作者：Changsheng Yao、Song Lei、Cuihua Wang、Tuanjie Li、Chenxia Yu、Xiangshan Wang、Shujiang Tu

  DOI：10.1002/jhet.215

  日期：——

  A green and simple synthesis of 4-ayrl-3,4-dihydro-1H-pyrimido[1,2-a]benzimidazole derivatives was accomplished in excellent yields via the reaction of aryl aldehyde, 1,3-dicarbonyl compounds and 1H-benzo[d]imidazol-2-amine in ionic liquid of [bmim+][BF 4−]. This protocol has the advantages of easier work-up, mild reaction conditions, high yields, and an environmentally benign procedure compared with

  通过芳基醛，1,3-二羰基化合物和1 H的反应，以优异的收率完成了绿色简单的4-ayrl-3,4-dihydro-1 H-嘧啶[1,2- a ]苯并咪唑衍生物的合成。[bmim + ] [BF ]的离子液体中的-苯并[ d ]咪唑-2-胺。与已报道的方法相比，该方案具有易于后处理，反应条件温和，收率高和对环境无害的优点。J.杂环化​​学。（2010）。 4-