3-(2,5-dimethoxyphenyl)propanoylhydrazine | 436155-33-8

• 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: 3-(2,5-dimethoxyphenyl)propanoylhydrazine
• 英文别名: 3-(2,5-dimethoxy-phenyl)-propionic acid hydrazide；3-(2,5-Dimethoxy-phenyl)-propionsaeure-hydrazid；3-(2,5-Dimethoxyphenyl)propanehydrazide
• CAS: 436155-33-8
• 化学式: C₁₁H₁₆N₂O₃
• 分子量: 224.26
• InChiKey: TXAVLLIRVPFLDZ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.7
• 重原子数：
  16
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.36
• 拓扑面积：
  73.6
• 氢给体数：
  2
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  3-(2,5-dimethoxyphenyl)propanoylhydrazine 生成 2,5-二甲氧基苯乙胺
  参考文献：
  名称：

  Dynamic Rearrangement Within the Antheraea pernyi Silk Fibroin Gene Is Associated with Four Types of Repetitive Units

  摘要：

  We characterized a full-length gene encoding wild silkmoth Antheraea pernyi fibroin (Ap-fibroin) to clarify the conformation of repetitive sequences. The gene consisted of a first exon encoding 14 amino acid residues, a short intron (120 bp), and a long second exon encoding 2,625 amino acid residues. Three amino acids, alanine, glycine, and serine, amounted to 81% of the Ap-fibroin sequence. The Ap-fibroin, except for 155 residues of the amino terminus, was composed of 80 tandemly arranged polyalanine-containing units (motifs). A motif was a doublet of a polyalanine block (PAB) and a nonpolyalanine block (NPAB). Seventy-eight of the 80 motifs were classified into four types based on differences in the NPAB sequences. Although respective motifs were significantly conserved, many rearrangements were observed within the second exon, i.e., the triplication of a 558-bp-long sequence and other duplication events of shorter sequences. Chi-like sequences, GCTGGAG, might contribute to the rearrangement within the gene as described in human minisatellite loci, because they were found at specific sites of NPAB-encoding sequences in three of four types of motifs. The present results support the idea that the Ap-fibroin gene is unstable like minisatellite sequences and that the evolution of this gene is strongly associated with its instability.

  DOI：

  10.1007/s002390010095
• 作为产物：
  描述：

  3-(2,5-二甲氧苯基)丙酸 在 戊醇 、 硫酸 、 一水合肼 、 苯 作用下， 生成 3-(2,5-dimethoxyphenyl)propanoylhydrazine
  参考文献：
  名称：

  Dynamic Rearrangement Within the Antheraea pernyi Silk Fibroin Gene Is Associated with Four Types of Repetitive Units

  摘要：

  We characterized a full-length gene encoding wild silkmoth Antheraea pernyi fibroin (Ap-fibroin) to clarify the conformation of repetitive sequences. The gene consisted of a first exon encoding 14 amino acid residues, a short intron (120 bp), and a long second exon encoding 2,625 amino acid residues. Three amino acids, alanine, glycine, and serine, amounted to 81% of the Ap-fibroin sequence. The Ap-fibroin, except for 155 residues of the amino terminus, was composed of 80 tandemly arranged polyalanine-containing units (motifs). A motif was a doublet of a polyalanine block (PAB) and a nonpolyalanine block (NPAB). Seventy-eight of the 80 motifs were classified into four types based on differences in the NPAB sequences. Although respective motifs were significantly conserved, many rearrangements were observed within the second exon, i.e., the triplication of a 558-bp-long sequence and other duplication events of shorter sequences. Chi-like sequences, GCTGGAG, might contribute to the rearrangement within the gene as described in human minisatellite loci, because they were found at specific sites of NPAB-encoding sequences in three of four types of motifs. The present results support the idea that the Ap-fibroin gene is unstable like minisatellite sequences and that the evolution of this gene is strongly associated with its instability.

  DOI：

  10.1007/s002390010095

文献信息

• Intramolecular addition of acyldiazenecarboxylates onto double bonds in the synthesis of heterocycles
  作者：José V. Prata、Dina-Telma S. Clemente、Sundaresan Prabhakar、Ana M. Lobo、Isabel Mourato (in part)、Paula S. Branco (in part)

  DOI：10.1039/b110414d

  日期：2002.2.6

  Appropriate aryl-substituted unsymmetrical azodicarbonyl compounds, generated from bishydrazides by oxidation, undergo intramolecular cyclisations to furnish a variety of useful heterocycles such as N-substituted oxindoles, carbostyrils, benzazepinones, benzazocinones, benzimidazolones, benzoxazinones and pyrazolones in varying degrees of efficiency. Methods are described to remove the N-acyl groups from the heteroaromatic compounds. Under mildly acidic conditions where equal opportunities are available for an ipso or a normal cyclisation it is the former process that occurs preferentially. Evidence is presented in favour of a C-to-C migration in the ipso product for the formation of a methoxy-substituted carbostyril derivative. One of the spiro substances is shown to participate in dienone–phenol rearrangement to provide the corresponding quinolone–phenol in high yield.

  适当的芳基取代的不对称二羧肼化合物通过氧化从双肼酰胺生成，发生分子内环化，生成各种有用的杂环化合物，如N-取代的氧杂吲哚、羧基醇、苯并氮杂哌啶、苯并氮杂呋喃、苯并咪唑酮、苯并氧杂噁唑和吡唑酮，效率各不相同。文中描述了去除杂芳香化合物中N-酰基基团的方法。在弱酸性条件下，当存在相等机会进行ipso或正常环化时，前者过程优先发生。证据支持在ipso产物中发生C到C的迁移，用于形成甲氧基取代的羧基醇衍生物。显示出某个螺旋物质参与二烯酮–酚重排，以高产率生成相应的喹啉–酚。