6-chloro-3-(2-methylphenyl)uracil | 142940-85-0

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二嗪类
• 英文名称: 6-chloro-3-(2-methylphenyl)uracil
• 英文别名: 6-chloro-3-(2-methylphenyl)-1H-pyrimidine-2,4-dione
• CAS: 142940-85-0
• 化学式: C₁₁H₉ClN₂O₂
• 分子量: 236.658
• InChiKey: ARZMCJVOBUEPSD-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  16
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.09
• 拓扑面积：
  49.4
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  6-chloro-3-(2-methylphenyl)uracil 生成 3-o-Tolyl-10-p-tolyl-10H-pyrimido[4,5-b]quinoline-2,4-dione
  参考文献：
  名称：

  嘧啶环部分具有轴向手性的新型5-脱氮黄素的合成与反应

  摘要：

  已经制备了一系列在嘧啶环部分具有轴向手性的新型5-脱氮黄素衍生物，以研究嘧啶位点对黄素和底物之间的立体选择性反应的影响。通过在手性固定相上的HPLC方法和非对映异构体形成方法，已成功实现了外消旋化合物的光学拆分。在不对称辅酶“（净）氢化物转移”反应的模型反应中研究了5-脱氮黄素对映体的手性识别能力。

  DOI：

  10.1016/s0040-4039(00)79843-1
• 作为产物：
  描述：

  邻甲苯基脲 在 水 、 三氯氧磷 作用下， 生成 6-chloro-3-(2-methylphenyl)uracil
  参考文献：
  名称：

  嘧啶环部分具有轴向手性的新型5-脱氮黄素的合成与反应

  摘要：

  已经制备了一系列在嘧啶环部分具有轴向手性的新型5-脱氮黄素衍生物，以研究嘧啶位点对黄素和底物之间的立体选择性反应的影响。通过在手性固定相上的HPLC方法和非对映异构体形成方法，已成功实现了外消旋化合物的光学拆分。在不对称辅酶“（净）氢化物转移”反应的模型反应中研究了5-脱氮黄素对映体的手性识别能力。

  DOI：

  10.1016/s0040-4039(00)79843-1

文献信息

• Atropisomeric Flavoenzyme Models with a Modified Pyrimidine Ring:  Syntheses, Physical Properties, and Stereochemistry in the Reactions with NAD(P)H Analogs
  作者：Atsuyoshi Ohno、Jun Kunitomo、Yasushi Kawai、Tetsuji Kawamoto、Masaki Tomishima、Fumio Yoneda

  DOI：10.1021/jo961799t

  日期：1996.1.1

  Optically active 5-deazaflavin derivatives (3-aryl-10-(4-tert-butylphenyl)pyrimido[4,5-b]quinoline-2,4(3H,10H)-dione) with an axial chirality at the pyrimidine ring have been synthesized, and the kinetics of enantiomerization have been measured for some of them. The absolute configurations of these compounds have been determined by X-ray crystallographic analysis and chemical reactions for the first time in atropisomeric flavoenzyme models. Enantioface-differentiating (net) hydride-transfer reactions with 1-benzyl-1,4-dihydronicotinamide (BNAH) have revealed that the selectivity of the reacting face. of the 3-[2-(hydroxymethyl)phenyl] derivative 1 changes depending on the presence or absence of Mg2+; the hydroxymethyl group of 1 exerts steric inhibition in the absence of Mg2+, whereas it facilitates the approach of BNAH. in the presence of Mg2+ Asymmetric (net) hydride-transfer reactions with chiral 1,4-dihydro-2,4-dimethyl-N-(alpha-methylbenzyl)-1-propylnicotinamide (Me(2)PNPH) predict that the most favorable intermolecular arrangement of these two molecules at the transition state is the one in which the pyrimidine ring of 1 and the carbamoyl group of Me(2)PNPH tend to face each other and the maximum overlap of their molecular planes is achieved regardless of the presence or absence of Mg2+. The arrangement mimics that of FAD and NADPH in the active site of a flavoenzyme. The present result indicates an energetically favorable overlap of the molecular planes of a flavin and an NAD(P)H coenzyme, as well. as a significant influence of functional groups from an apoenzyme in proximity to a flavin coenzyme on the stereochemistry of biological redox reactions.