2-<2,3-Dimethoxy-benzyliden>-acetessigsaeure-aethylester | 19411-81-5

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 肉桂酸及其衍生物
• 英文名称: 2-<2,3-Dimethoxy-benzyliden>-acetessigsaeure-aethylester
• 英文别名: Ethyl 2-[(2,3-dimethoxyphenyl)methylidene]-3-oxobutanoate
• CAS: 19411-81-5
• 化学式: C₁₅H₁₈O₅
• 分子量: 278.305
• InChiKey: MLUAMGSNRCIODQ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.2
• 重原子数：
  20
• 可旋转键数：
  7
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  61.8
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  2-<2,3-Dimethoxy-benzyliden>-acetessigsaeure-aethylester 在 三乙胺 、 zinc(II) chloride 、 Eu(fod)3 作用下， 以 乙腈 、 苯 为溶剂， 反应 31.0h， 生成 1-(2,3-Dimethoxy-phenyl)-3-hydroxy-9,10-dioxo-4,4a,9,10-tetrahydro-anthracene-2-carboxylic acid ethyl ester
  参考文献：
  名称：

  摘要：

  7-Hydroxy-5-(2-methoxyphenyl)-2-methyl-6-R-1,4-naphthoquinones, 8-hydroxy-1-(2-methoxyphenyl)-3-oxo-1,2,3,4-tetrahydro-9,10-anthraquinone, and 2-ethoxycarbonyl-8-hydroxy-1-(2-methoxyphenyl)3-trimethylsiloxy-1,1a,4,4a-tetrahydro-9,10-anthraquinone were synthesized by reactions of 1-(2-methoxyphenyl)-2-R-3-trimethylsiloxy-1,3-butadienes with 2-bromo-5-methyl-1,4-benzoquinone and juglone. 1-Aryl-2-ethoxycarbonyl-3-trimethylsiloxy-1,3-butadienes reacted with 1,4-naphthoquinone to afford 1-aryl-2-ethoxycarbonyl-3-hydroxy-9,10-anthraquinones and their 4,4a-dihydro derivatives.

  DOI：

  10.1023/a:1013127520476
• 作为产物：
  描述：

  乙酰乙酸乙酯 、 2,3-二甲氧基苯甲醛 以78%的产率得到2-<2,3-Dimethoxy-benzyliden>-acetessigsaeure-aethylester
  参考文献：
  名称：

  摘要：

  7-Hydroxy-5-(2-methoxyphenyl)-2-methyl-6-R-1,4-naphthoquinones, 8-hydroxy-1-(2-methoxyphenyl)-3-oxo-1,2,3,4-tetrahydro-9,10-anthraquinone, and 2-ethoxycarbonyl-8-hydroxy-1-(2-methoxyphenyl)3-trimethylsiloxy-1,1a,4,4a-tetrahydro-9,10-anthraquinone were synthesized by reactions of 1-(2-methoxyphenyl)-2-R-3-trimethylsiloxy-1,3-butadienes with 2-bromo-5-methyl-1,4-benzoquinone and juglone. 1-Aryl-2-ethoxycarbonyl-3-trimethylsiloxy-1,3-butadienes reacted with 1,4-naphthoquinone to afford 1-aryl-2-ethoxycarbonyl-3-hydroxy-9,10-anthraquinones and their 4,4a-dihydro derivatives.

  DOI：

  10.1023/a:1013127520476

文献信息

• Calcium antagonist
  申请人：Laboratorios Delagrange

  公开号：US04722931A1

  公开（公告）日：1988-02-02

  The invention concerns a compound of the formula ##STR1## and salts thereof resulting from addition with pharmaceutically acceptable mineral or organic acid, wherein R is an alkylenedioxy group substituted at the 2',3'-position, and R.sub.1 and R.sub.2 are selected from the group consisting of a linear or branched alkyl having 1-4 carbon atoms, a methoxyethyl, or a 2-pyridyl methyl group. The compounds of the present invention are useful in relaxing cardiac or smooth muscle.

  本发明涉及一种具有以下化学式的化合物及其通过与药物上可接受的矿物酸或有机酸添加得到的盐：##STR1##，其中R是2',3'-位置上取代的亚烷基二氧基团，而R.sub.1和R.sub.2是从以下组中选择：具有1-4个碳原子的直链或支链烷基、甲氧基乙基或2-吡啶甲基基团。本发明的化合物在放松心肌或平滑肌方面是有用的。
• Rates of reaction of <i>n</i>-butanethiol with some conjugated heteroenoid compounds
  作者：C. E. Lough、D. J. Currie、H. L. Holmes

  DOI：10.1139/v68-127

  日期：1968.3.1

  The reactions of substituted 3-benzal-2,4-pentanediones, ethyl benzalacetoacetates, diethyl benzalmalonates, benzalmalonamides, cinnamalmalononitriles, β-nitrostyrenes, and β-nitropropenylbenzenes with excess n-butanethiol go essentially to completion in 20% aqueous ethanolic solution buffered to pH 7. The second order rate constants derived from the reactions of meta- and para- substituted derivatives correlate well with Hammett a constants. The nature and conformation of the functional group cis to the phenyl group determines the extent to which ortho substituents hinder the reaction.

  替代3-苯甲酮-2,4-戊二酮、乙基苯基乙酮酸酯、二乙基苯基丙二酸酯、苯基丙二酰胺、肉桂基丙烯腈、β-硝基苯乙烯和β-硝基丙烯基苯在过量正丁硫醇存在下在pH 7缓冲的20%乙醇水溶液中基本上完全反应。从间位和对位取代衍生物的反应中得出的二阶速率常数与Hammett a常数很好地相关。苯基团顺式于苯基团的功能团的性质和构象决定了邻位取代物对反应的阻碍程度。
• Horning et al., Organic Syntheses, 1963, vol. Coll. Vol. IV, p. 408
  作者：Horning et al.

  DOI：——

  日期：——