2-(2-cyanoethyl)-4-pentenoic acid | 131702-76-6

• 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-(2-cyanoethyl)-4-pentenoic acid
• 英文别名: 2-(2-Cyanoethyl)pent-4-enoic acid
• CAS: 131702-76-6
• 化学式: C₈H₁₁NO₂
• 分子量: 153.181
• InChiKey: RQODGKXSJVJSGJ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.9
• 重原子数：
  11
• 可旋转键数：
  5
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  61.1
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  2-(2-cyanoethyl)-4-pentenoic acid 在 重氮甲烷 、 咪唑 、 sodium tetrahydroborate 、 lithium chloride 作用下， 以 二氯甲烷 为溶剂， 反应 34.0h， 生成 (4S)-4-[[tert-butyl(dimethyl)silyl]oxymethyl]hept-6-enenitrile
  参考文献：
  名称：

  Asymmetric synthesis of 5- and 6-membered lactones from cyclic substrates bearing a C2-chiral auxiliary

  摘要：

  Optically active lactones were synthesized by a novel asymmetric synthesis in which enantiotopic groups remote from a prochiral center were effectively discriminated. The cyclic diamide alcohols bearing a C2-chiral auxiliary, (+)-[1,1'-binaphthyl]-2,2'-diamine (4), were designed and prepared such that the hydroxyl group should attack preferentially at one of the two carbonyl groups. By the catalytic action of trifluoroacetic acid, the substrates 6a,b and 19 were smoothly converted to the lactones 7a (71% de), 7b (97% de), and 20 (> 99% de), the configurations of which were determined to be R, S, and R, respectively. A naturally occurring pheromone, (R)-(+)-5-hexadecanolide (13), was synthesized optically pure from 7b. Transition-state models for the present asymmetric lactonization were constructed according to the stereoelectronic theory proposed by Deslongchamps. The stability of the models was assessed by MM2 calculation, and the direction of asymmetric induction thus calculated coincided with the experimental results.

  DOI：

  10.1021/jo00003a038
• 作为产物：
  描述：

  烯丙基丙二酸二乙酯 在 盐酸 、 氢氧化钾 、 potassium tert-butylate 作用下， 以 乙醇 为溶剂， 25.0~150.0 ℃ 、266.64 Pa 条件下， 反应 49.0h， 生成 2-(2-cyanoethyl)-4-pentenoic acid
  参考文献：
  名称：

  Asymmetric synthesis of 5- and 6-membered lactones from cyclic substrates bearing a C2-chiral auxiliary

  摘要：

  Optically active lactones were synthesized by a novel asymmetric synthesis in which enantiotopic groups remote from a prochiral center were effectively discriminated. The cyclic diamide alcohols bearing a C2-chiral auxiliary, (+)-[1,1'-binaphthyl]-2,2'-diamine (4), were designed and prepared such that the hydroxyl group should attack preferentially at one of the two carbonyl groups. By the catalytic action of trifluoroacetic acid, the substrates 6a,b and 19 were smoothly converted to the lactones 7a (71% de), 7b (97% de), and 20 (> 99% de), the configurations of which were determined to be R, S, and R, respectively. A naturally occurring pheromone, (R)-(+)-5-hexadecanolide (13), was synthesized optically pure from 7b. Transition-state models for the present asymmetric lactonization were constructed according to the stereoelectronic theory proposed by Deslongchamps. The stability of the models was assessed by MM2 calculation, and the direction of asymmetric induction thus calculated coincided with the experimental results.

  DOI：

  10.1021/jo00003a038

文献信息

• Processes for the production of alpha-difluoromethyl ornithine (DFMO)
  申请人：Bristol-Myers Squibb Company

  公开号：US20040171876A1

  公开（公告）日：2004-09-02

  Provided are processes and synthetic intermediates useful for the preparation of &agr;-difluoromethylornithine (DFMO) having the formula 1

  提供了用于制备α-二氟甲基鸟氨酸（DFMO）的工艺和合成中间体，其化学式为1。
• YAMAMOTO, YUKIO;SAKAMOTO, AKIO;NISHIOKA, TAKAAKI;ODA, JUNICHI;FUKAZAWA, Y+, J. ORG. CHEM., 56,(1991) N, C. 1112-1119
  作者：YAMAMOTO, YUKIO、SAKAMOTO, AKIO、NISHIOKA, TAKAAKI、ODA, JUNICHI、FUKAZAWA, Y+

  DOI：——

  日期：——
• Asymmetric synthesis of 5- and 6-membered lactones from cyclic substrates bearing a C2-chiral auxiliary
  作者：Yukio Yamamoto、Akio Sakamoto、Takaaki Nishioka、Junichi Oda、Yoshimasa Fukazawa

  DOI：10.1021/jo00003a038

  日期：1991.2

  Optically active lactones were synthesized by a novel asymmetric synthesis in which enantiotopic groups remote from a prochiral center were effectively discriminated. The cyclic diamide alcohols bearing a C2-chiral auxiliary, (+)-[1,1'-binaphthyl]-2,2'-diamine (4), were designed and prepared such that the hydroxyl group should attack preferentially at one of the two carbonyl groups. By the catalytic action of trifluoroacetic acid, the substrates 6a,b and 19 were smoothly converted to the lactones 7a (71% de), 7b (97% de), and 20 (> 99% de), the configurations of which were determined to be R, S, and R, respectively. A naturally occurring pheromone, (R)-(+)-5-hexadecanolide (13), was synthesized optically pure from 7b. Transition-state models for the present asymmetric lactonization were constructed according to the stereoelectronic theory proposed by Deslongchamps. The stability of the models was assessed by MM2 calculation, and the direction of asymmetric induction thus calculated coincided with the experimental results.