1,5-二甲基-6-亚甲基-1,2,3,6-四氢吡嗪 | 141089-27-2

• 分子结构分类: 有机化合物 - 有机氮化合物
• 中文名称: 1,5-二甲基-6-亚甲基-1,2,3,6-四氢吡嗪
• 英文名称: N-methyl-2-methylene-3-methyl-1,4-diazacyclohexan-3-ene
• 英文别名: 1,5-Dimethyl-6-methylene-1,2,3,6-tetrahydropyrazine；1,5-Dimethyl-6-methylidene-2,3-dihydropyrazine
• CAS: 141089-27-2
• 化学式: C₇H₁₂N₂
• 分子量: 124.186
• InChiKey: ZAOBCBIAFHTSQV-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.6
• 重原子数：
  9
• 可旋转键数：
  0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.57
• 拓扑面积：
  15.6
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  2,3-丁二酮 、 N-甲基乙二胺 以20%的产率得到1,5-二甲基-6-亚甲基-1,2,3,6-四氢吡嗪
  参考文献：
  名称：

  A Diamine-Exchange Reaction of Dihydropyrazines

  摘要：

  Dihydropyrazines reacted with 1,2-diamines to form tetraazadecalins as intermediates, and then the reaction proceeded forward to dissociate into alternate dihydropyrazine and diamine, or backward to dissociate into the starting materials in certain equilibrium. The product distribution is controlled by diamine-exchange equilibrium reaction. The various equilibrium reactions were analyzed by NMR spectroscopy.

  DOI：

  10.3987/com-00-8932

文献信息

• TRICYCLIC COMPOUNDS AND USE THEREOF
  申请人：Aso Kazuyoshi

  公开号：US20090186879A1

  公开（公告）日：2009-07-23

  There is provided a compound of the formula (I′): wherein x is a nitrogen or CRx, Rx is a hydrogen, etc., R 1 is an optionally substituted hydrocarbon group, etc., R 2 is an optionally substituted hydrocarbon group, etc., ring A is 5- to 8-membered heterocyclic ring, etc., and each of Y 1 , Y 2 and Y 3 is an optionally substituted carbon or a nitrogen, etc.; or a salt thereof or a prodrug thereof, which have CRF receptor antagonistic activity and use thereof.

  提供了一个公式(I′)的化合物：其中x是氮或CRx，Rx是氢等，R1是可选择地取代的碳氢基团等，R2是可选择地取代的碳氢基团等，环A是5-至8-成员的杂环环，等等，Y1、Y2和Y3中的每一个是可选择地取代的碳或氮等；或其盐或前药，具有CRF受体拮抗活性及其用途。
• TRICYCLIC COMPOUNDS HAVING CORTICOTROPIN-RELEASING FACTOR ANTAGONISTIC ACTIVITY AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM
  申请人：Aso Kazuyoshi

  公开号：US20100298287A1

  公开（公告）日：2010-11-25

  There is provided a compound of the formula (I′): wherein X is a nitrogen or CRx, Rx is a hydrogen, etc., R 1 is an optionally substituted hydrocarbon group, etc., R 2 is an optionally substituted hydrocarbon group, etc., ring A is 5- to -8-membered heterocyclic ring, etc., and each of Y 1 , Y 2 and Y 3 is an optionally substituted carbon or a nitrogen, etc.; or ‘a salt thereof or a prodrug thereof, which have CRF receptor antagonistic activity and use thereof.

  提供了一个公式（I'）的化合物，其中X是氮或CRx，Rx是氢等，R1是可选取代的碳氢基团等，R2是可选取代的碳氢基团等，环A是5-至-8成员的杂环环等，每个Y1、Y2和Y3是可选取代的碳或氮等；或其盐或前药，具有CRF受体拮抗活性和使用。
• Reaction of .alpha.-diketones with 2-amino alcohols. Intramolecular competitive 6-exo-trig vs 5-endo-trig processes. A systematic and kinetic study
  作者：Benito Alcaide、Joaquin Plumet、Ignacio M. Rodriguez-Campos、Severino Garcia-Blanco、Sagrario Martinez-Carrera

  DOI：10.1021/jo00034a046

  日期：1992.4

  2-Aminoethanol and C-substituted derivatives 1 react with diacetyl, benzil, and 1-phenyl-1,2-propanedione, models of alpha-diketones 2 to give with remarkable regio- and stereoselectivity 2-hydroxy-5,6-dihydro-2H-1,4-oxazines 3, cis-octahydro[1,4]oxazino[3,2-b]oxazines 4, alpha-imino ketones 6, 2-acetyl-1,3-oxazolidines 7, N,N'-bis(2-hydroxy-2-methylpropyl)-2,3-butanediimines 8, and 2,2'-dimethyl-2,2'-bioxazolidines 9 depending on the nature of the reagents and the reaction conditions. On the basis of isolated intermediates, a reasonable mechanism taking into account the stereoelectronic effects observed on the cyclization has been proposed for these processes. In addition, a kinetic study of the ring-chain-ring tautomeric equilibrium of oxazines 3a-c, 3i-k, and 3o-q has been studied by H-1 NMR and C-13 NMR. In solution, compounds 3a-c and 3i-k exhibit a three-component tautomeric equilibria consisting of the following: the beta-iminohemiacetal 3, the beta-hydroxyimino ketone 6, and the 2-acetyl- or 2-benzoyl-1,3-oxazolidine 7. The calculated rate constants for this process show that the equilibrium is shifted toward the formation of the five-membered ring by 0.4-4.8 kJ mol-1 over the six-membered ring depending on the substitution patterns. Compounds 3p-q exist in solution as equimolar mixtures of the ring and open-chain tautomers. Compound 3o exists predominantly in the open-chain form. In addition, 2-acylthiazolidines 13a-c do not evidence any dynamic processes in solution.
• US8785460B2
  申请人：——

  公开号：US8785460B2

  公开（公告）日：2014-07-22
• US8901141B2
  申请人：——

  公开号：US8901141B2

  公开（公告）日：2014-12-02