2-ethyl-4-methylquinazoline | 13535-90-5

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二氮杂萘
• 英文名称: 2-ethyl-4-methylquinazoline
• CAS: 13535-90-5
• 化学式: C₁₁H₁₂N₂
• mdl: MFCD18448898
• 分子量: 172.23
• InChiKey: WHCHYBDOPGJSCK-UHFFFAOYSA-N

物化性质

• 沸点：
  223.8±23.0 °C(Predicted)
• 密度：
  1.082±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  13
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.272
• 拓扑面积：
  25.8
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  2,4-dicyano-1,3-diethoxycarbonyl-1,2,3,4-tetrahydroquinazoline 在 sodium hydride 、 N,N-二甲基甲酰胺 、 苯甲酸 作用下， 以 xylene 为溶剂， 反应 4.0h， 生成 2-ethyl-4-methylquinazoline
  参考文献：
  名称：

  Hahn, Jung-Tai; Popp, Frank D., Journal of Heterocyclic Chemistry, 1989, vol. 26, p. 1357 - 1372

  摘要：

  DOI：

文献信息

• Lewis-Acid-Catalysed Activation of Nitriles: A Microwave-Assisted Solvent-Free Synthesis of 2,4-Disubstituted Quinazolines and 1,3-Diazaspiro[5.5]undec-1-enes
  作者：Ujwal Pratim Saikia、Geetika Borah、Pallab Pahari

  DOI：10.1002/ejoc.201701585

  日期：2018.3.14

  A single‐step, solvent‐free, and transition‐metal‐free reaction for the synthesis of quinazolines/quinazolinones starting from 2‐amino carbonyl compounds, and of 1,3‐diazaspiro[5.5]undec‐1‐ene derivatives starting from N‐tosyl‐2‐(cyclohexenyl)ethylamines, is reported. The Lewis‐acid‐catalysed activation of nitriles is a key feature of this reaction.

  一种从2-氨基羰基化合物开始合成喹唑啉/喹唑啉酮和从N开始的1,3-二氮杂螺[5.5]十一碳烯-1-烯衍生物的单步，无溶剂和无过渡金属反应报道了甲苯磺酰基-2-（环己烯基）乙胺。路易斯酸催化的腈活化是该反应的关键特征。
• Copper-catalyzed three-component one-pot synthesis of quinazolines
  作者：Jia Ju、Ruimao Hua、Ji Su

  DOI：10.1016/j.tet.2012.09.035

  日期：2012.11

  Two efficient approaches to multi-substituted quinazolines by the three-component one-pot reaction of o-bromo aromatic ketones/aldehydes, ammonia water and aromatic aldehydes, or primary alcohols catalyzed by CuCl have been developed.

  已经开发出两种通过邻溴芳族酮/醛，氨水和芳族醛或CuCl催化的伯醇的三组分一锅法反应制备多取代喹唑啉的有效方法。
• Synthesis of Quinazoline and Quinazolinone Derivatives via Ligand-Promoted Ruthenium-Catalyzed Dehydrogenative and Deaminative Coupling Reaction of 2-Aminophenyl Ketones and 2-Aminobenzamides with Amines
  作者：Pandula T. Kirinde Arachchige、Chae S. Yi

  DOI：10.1021/acs.orglett.9b01082

  日期：2019.5.3

  highly selective for the dehydrogenative coupling reaction of 2-aminophenyl ketones with amines to form quinazoline products. The deaminative coupling reaction of 2-aminobenzamides with amines led to the efficient formation of quinazolinone products. The catalytic coupling method provides an efficient synthesis of quinazoline and quinazolinone derivatives without using any reactive reagents or forming

  发现原位形成的钌催化体系（[Ru] / L）对2-氨基苯基酮与胺的脱氢偶联反应形成喹唑啉产物具有高度选择性。2-氨基苯甲酰胺与胺的脱氨基偶联反应导致喹唑啉酮产物的有效形成。催化偶合方法可有效合成喹唑啉和喹唑啉酮衍生物，而无需使用任何反应性试剂或形成任何有毒副产物。
• METHOD FOR PREPARING AN IMPORTANT INTERMEDIATE OF LINAGLIPTIN
  申请人：2Y-CHEM, LTD.

  公开号：US20150274728A1

  公开（公告）日：2015-10-01

  The present invention discloses an improved process for preparing an important intermediate of linagliptin. In particular, disclosed are a process for preparing a compound V which is an important intermediate of linagliptin and has the structure V, and an industrial process of preparing linagliptin having excellent chemical and optical purities, which is an inhibitor of dipeptidyl peptidase-4 (DPP-IV), from the compound V. The process employs a phase-transfer catalyst, is high in yield, easy and simple to handle, environmentally friendly, suitable for industrial mass production, and can be implemented by a “one-pot process”.

  本发明公开了一种改进的制备利那格列汀重要中间体的工艺。具体公开了一种制备化合物V的工艺，该化合物V是利那格列汀的重要中间体，具有结构V，并且从化合物V中制备出具有优异化学和光学纯度的利那格列汀的工业工艺，利那格列汀是二肽基肽酶-4（DPP-IV）的抑制剂。该工艺采用相转移催化剂，产率高，易于操作和简单处理，环保，适合工业大规模生产，并且可以通过“一锅法”实施。
• Compounds that modulate EGFR activity and methods for treating or preventing conditions therewith
  申请人：Gray Nathanael S.

  公开号：US20130137709A1

  公开（公告）日：2013-05-30

  Provided are compounds and methods for treating or preventing kinase-mediated disorders therewith.

  提供了化合物和方法，用于治疗或预防激酶介导的疾病。