1-benzyl-4,5-dihydro-1H-[1,2,3]triazole | 17886-25-8

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 1-benzyl-4,5-dihydro-1H-[1,2,3]triazole
• 英文别名: 1-Benzyltriazoline；1-benzyl-4,5-dihydrotriazole
• CAS: 17886-25-8
• 化学式: C₉H₁₁N₃
• 分子量: 161.206
• InChiKey: DQQRMBAVSCPSJH-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.1
• 重原子数：
  12
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  28
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  1-benzyl-4,5-dihydro-1H-[1,2,3]triazole 在 水 作用下， 生成 1-(苯基甲基)氮丙啶 、 乙醛 、 苄胺 、 N-苄基乙醇胺
  参考文献：
  名称：

  Acid-catalyzed decomposition of 1-alkyltriazolines: a mechanistic study

  摘要：

  1-Alkyltriazolines are five-membered cyclic triazenes containing the unusual Z-configuration for the triazene moiety. The hydrolytic decomposition of these compounds in aqueous or mixed acetonitrile-aqueous buffers leads predominantly to the formation of the corresponding 1-alkylaziridines and lesser amounts of 2-(alkylamino)ethanols, alkylamines, and acetaldehyde. The latter two products presumably result from hydrolysis of a rearrangement product, N-ethylidenealkylamine. Neither the nature of the 1-alkyl group nor the pH of the medium greatly influences the product distribution, although decomposition in purely aqueous buffers slightly reduces the aziridine yields. The rate of hydrolysis of 1-alkyltriazolines is about twice as fast as that of the analogous acyclic 1,3,3-trialkyltriazenes and varies in the order tert-butyl > isopropyl > ethyl > butyl > methyl > propyl > benzyl. The mechanism of the decomposition is specific acid-catalyzed (A1) involving rapid reversible protonation followed by rate-limiting formation of a 2-(alkylamino)ethyldiazonium ion. The slopes of the log k(obs) versus pH plots are near -1.0. The solvent deuterium isotope effect, k(H2O)/k(D2O), is in all cases <1.0 and ranges from 0.58 for 1-methyltriazoline to 0.86 for 1-benzyltriazoline. The rate of decomposition shows no significant dependence on the concentration of the buffer acid. The proposed mechanism involves rate-limiting formation of a 2-(alkylamino)ethyldiazonium ion, which is then partitioned among several competing product formation pathways. 1-Alkyltriazolines are potent direct-acting mutagens in the alkylation-sensitive TA 1535 strain of Salmonella typhimurium. A clear, dose-dependent mutagenicity is observed. At the highest dose level, various 1-alkyltriazolines have activities roughly equivalent to that of the potent methylating agent, 1,3-dimethyltriazene. At low levels of substrate, 1-alkyltriazolines are significantly more active than 1,3-dimethyltriazene, with mutagenicity following the order benzyl > methyl > ethyl.

  DOI：

  10.1021/jo00060a027
• 作为产物：
  描述：

  苄基叠氮 、 alkaline earth salt of/the/ methylsulfuric acid 以24%的产率得到1-benzyl-4,5-dihydro-1H-[1,2,3]triazole
  参考文献：
  名称：

  Acid-catalyzed decomposition of 1-alkyltriazolines: a mechanistic study

  摘要：

  1-Alkyltriazolines are five-membered cyclic triazenes containing the unusual Z-configuration for the triazene moiety. The hydrolytic decomposition of these compounds in aqueous or mixed acetonitrile-aqueous buffers leads predominantly to the formation of the corresponding 1-alkylaziridines and lesser amounts of 2-(alkylamino)ethanols, alkylamines, and acetaldehyde. The latter two products presumably result from hydrolysis of a rearrangement product, N-ethylidenealkylamine. Neither the nature of the 1-alkyl group nor the pH of the medium greatly influences the product distribution, although decomposition in purely aqueous buffers slightly reduces the aziridine yields. The rate of hydrolysis of 1-alkyltriazolines is about twice as fast as that of the analogous acyclic 1,3,3-trialkyltriazenes and varies in the order tert-butyl > isopropyl > ethyl > butyl > methyl > propyl > benzyl. The mechanism of the decomposition is specific acid-catalyzed (A1) involving rapid reversible protonation followed by rate-limiting formation of a 2-(alkylamino)ethyldiazonium ion. The slopes of the log k(obs) versus pH plots are near -1.0. The solvent deuterium isotope effect, k(H2O)/k(D2O), is in all cases <1.0 and ranges from 0.58 for 1-methyltriazoline to 0.86 for 1-benzyltriazoline. The rate of decomposition shows no significant dependence on the concentration of the buffer acid. The proposed mechanism involves rate-limiting formation of a 2-(alkylamino)ethyldiazonium ion, which is then partitioned among several competing product formation pathways. 1-Alkyltriazolines are potent direct-acting mutagens in the alkylation-sensitive TA 1535 strain of Salmonella typhimurium. A clear, dose-dependent mutagenicity is observed. At the highest dose level, various 1-alkyltriazolines have activities roughly equivalent to that of the potent methylating agent, 1,3-dimethyltriazene. At low levels of substrate, 1-alkyltriazolines are significantly more active than 1,3-dimethyltriazene, with mutagenicity following the order benzyl > methyl > ethyl.

  DOI：

  10.1021/jo00060a027

文献信息

• [EN] SUBSTITUTED 1,5-NAPHTHYRIDINES OR QUINOLINES AS ALK5 INHIBITORS<br/>[FR] 1,5-NAPHTYRIDINES OU QUINOLÉINES SUBSTITUÉES EN TANT QU'INHIBITEURS D'ALK5
  申请人：THERAVANCE BIOPHARMA R&D IP LLC

  公开号：WO2021102468A1

  公开（公告）日：2021-05-27

  The present disclosure provides inhibitors of activin receptor-like kinase 5 (ALK5). Also disclosed are methods to modulate the activity of ALK5 and methods of treatment of disorders mediated by ALK5.

  本公开提供了激活素受体样激酶5（ALK5）的抑制剂。还公开了调节ALK5活性的方法和通过ALK5介导的疾病的治疗方法。
• FUNCTIONALIZED 4- AND 5-VINYL SUBSTITUTED REGIOISOMERS OF 1,2,3-TRIAZOLES VIA 1,3-DIPOLAR CYCLOADDITION AND POLYMERS THEREOF
  申请人：ISP Investments Inc.

  公开号：EP2405757B1

  公开（公告）日：2017-11-08
• Acid-catalyzed decomposition of 1-alkyltriazolines: a mechanistic study
  作者：Richard H. Smith、Brian D. Wladkowski、Jesse E. Taylor、Erin J. Thompson、Brunon Pruski、John R. Klose、A. W. Andrews、Christopher J. Michejda

  DOI：10.1021/jo00060a027

  日期：1993.4

  1-Alkyltriazolines are five-membered cyclic triazenes containing the unusual Z-configuration for the triazene moiety. The hydrolytic decomposition of these compounds in aqueous or mixed acetonitrile-aqueous buffers leads predominantly to the formation of the corresponding 1-alkylaziridines and lesser amounts of 2-(alkylamino)ethanols, alkylamines, and acetaldehyde. The latter two products presumably result from hydrolysis of a rearrangement product, N-ethylidenealkylamine. Neither the nature of the 1-alkyl group nor the pH of the medium greatly influences the product distribution, although decomposition in purely aqueous buffers slightly reduces the aziridine yields. The rate of hydrolysis of 1-alkyltriazolines is about twice as fast as that of the analogous acyclic 1,3,3-trialkyltriazenes and varies in the order tert-butyl > isopropyl > ethyl > butyl > methyl > propyl > benzyl. The mechanism of the decomposition is specific acid-catalyzed (A1) involving rapid reversible protonation followed by rate-limiting formation of a 2-(alkylamino)ethyldiazonium ion. The slopes of the log k(obs) versus pH plots are near -1.0. The solvent deuterium isotope effect, k(H2O)/k(D2O), is in all cases <1.0 and ranges from 0.58 for 1-methyltriazoline to 0.86 for 1-benzyltriazoline. The rate of decomposition shows no significant dependence on the concentration of the buffer acid. The proposed mechanism involves rate-limiting formation of a 2-(alkylamino)ethyldiazonium ion, which is then partitioned among several competing product formation pathways. 1-Alkyltriazolines are potent direct-acting mutagens in the alkylation-sensitive TA 1535 strain of Salmonella typhimurium. A clear, dose-dependent mutagenicity is observed. At the highest dose level, various 1-alkyltriazolines have activities roughly equivalent to that of the potent methylating agent, 1,3-dimethyltriazene. At low levels of substrate, 1-alkyltriazolines are significantly more active than 1,3-dimethyltriazene, with mutagenicity following the order benzyl > methyl > ethyl.