2(R),3(R)-dimethyl-4-pentynoic acid amide | 145100-04-5

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: 2(R),3(R)-dimethyl-4-pentynoic acid amide
• 英文别名: (2R,3R)-2,3-dimethylpent-4-ynamide
• CAS: 145100-04-5
• 化学式: C₇H₁₁NO
• 分子量: 125.17
• InChiKey: SMTIEIROKVTQBC-NTSWFWBYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.38
• 重原子数：
  9.0
• 可旋转键数：
  2.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.57
• 拓扑面积：
  43.09
• 氢给体数：
  1.0
• 氢受体数：
  1.0

反应信息

• 作为反应物：
  描述：

  2(R),3(R)-dimethyl-4-pentynoic acid amide 在 四丁基氟化铵 作用下， 以 四氢呋喃 为溶剂， 生成 (3R,4R)-3,4-Dimethyl-5-methylene-pyrrolidin-2-one
  参考文献：
  名称：

  分子内环化乙酰胺的合成环烯酰胺

  摘要：

  环状烯酰胺12在天然存在的二氢卟酚，isobacteriochlorins，和咕啉的合成有用的类型的已经制备通过涉及尼古拉斯-施雷伯缩合，得到炔属酰胺的方法13，随后要么Ñ -Bu 4 NF或LiA1（NHBn）4-催化的闭环。

  DOI：

  10.1016/0040-4039(95)00031-7
• 作为产物：
  描述：

  2(R),3(R)-dimethyl-4-pentynoic acid 在 氨 、 三乙胺 作用下， 以 四氢呋喃 为溶剂， 反应 11.5h， 生成 2(R),3(R)-dimethyl-4-pentynoic acid amide
  参考文献：
  名称：

  Dihydropyrromethenones by Pd(0)-Mediated Coupling of Iodopyrroles and Acetylenic Amides. Synthesis of the A,B-Ring Segment of Phytochrome

  摘要：

  Dihydropyrromethenone derivative 32b, which constitutes the A,B-ring segment of phytochrome (6), has been prepared in enantiomerically pure form beginning with acetylenic amide 47b and iodopyrrole 27. The key steps involved the TBAF-catalyzed 5-exo-dig cyclization of the acetylenic pyrrole 48b, followed by thia-Mitsunobu inversion of the resulting alcohol derivative 31b.

  DOI：

  10.1021/jo970289b

文献信息

• Toward the Synthesis of Biologically Important Chlorins, Isobacteriochlorins, and Corrins. Cyclic Enamides from Acetylenic Amides
  作者：Peter A. Jacobi、Harry L. Brielmann、Sheila I. Hauck

  DOI：10.1021/jo960428+

  日期：1996.1.1

  Cyclic enamides 1 of a type useful in the synthesis of naturally occurring chlorins, isobacteriochlorins, and corrins have been prepared by a process involving 5-exo-dig cyclization of the appropriate acetylenic amides 11. The desired cyclization is catalyzed by either n-Bu(4)NF or LiAl-(NHBn)(4).
• Tetrapyrroles. IV. A highly efficient synthesis of homochiral dihydropyrromethenones via Pdo mediated coupling of iodopyrroles and acetylenic amides
  作者：Peter A. Jacobi、S. Rajeswari

  DOI：10.1016/s0040-4039(00)60941-3

  日期：1992.10

  Homochiral dihydropyrromethenones of type 20 have been synthesized in a highly efficient manner by Pd(o) mediated coupling of iodopyrrole 14 with acetylenic amides 18, followed by F- catalyzed 5-exo-dig cyclization. In analogous fashion, phytochrome (8) precursor 25a has been prepared in 85% overall yield from iodopyrrole 22.