1,1-dimethylethyl 1-ethylcyclopropanecarboxylate | 1194258-22-4

• 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: 1,1-dimethylethyl 1-ethylcyclopropanecarboxylate
• 英文别名: DY-4-89；1,1-Dimethylethyl 1-ethylcyclopropanecarboxyl ate；tert-butyl 1-ethylcyclopropane-1-carboxylate
• CAS: 1194258-22-4
• 化学式: C₁₀H₁₈O₂
• 分子量: 170.252
• InChiKey: DVCICAUDROZNNJ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  12
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.9
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  1,1-dimethylethyl 1-ethylcyclopropanecarboxylate 在 lithium aluminium tetrahydride 、 水 、 sodium hydroxide 作用下， 以 乙醚 为溶剂， 反应 19.17h， 以85%的产率得到(1-ethylcyclopropyl)methanol
  参考文献：
  名称：

  Two Approaches to Diverting the Course of a Free-Radical Cyclization: Application of Cyclopropylcarbinyl Radical Fragmentations and Allenes as Radical Acceptors

  摘要：

  Free radical cyclization of 4 and 7 gave the expected cyclization-reduction products (5 and 8) along with considerable amounts of products derived from a cyclization-atom transfer-secondary cyclization process (6 and 9). Two approaches to avoiding these unexpected products were explored. Use of a cyclopropylcarbinyl fragmentation avoided the secondary cyclization reaction (25 or 43 -> 26 or 44), whereas use of an allene as a radical acceptor avoided the atom-transfer reaction altogether (49 -> 52).

  DOI：

  10.1021/jo901834q
• 作为产物：
  描述：

  溴乙烷 、 环丙烷羧酸叔丁酯 在 lithium diisopropyl amide 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 反应 2.08h， 生成 1,1-dimethylethyl 1-ethylcyclopropanecarboxylate
  参考文献：
  名称：

  Pd(II)-催化的游离羧酸的对映选择性 C(sp3)-H 芳基化

  摘要：

  开发了一种基于乙二胺骨架的单保护氨基乙胺手性配体，以实现 Pd 催化的环丙烷羧酸和 2-氨基异丁酸的对映选择性 C(sp3)-H 芳基化，而无需使用外源性导向基团。这种新的手性催化剂为从与各种成环方法互补的简单起始材料制备各种手性羧酸提供了新的断开连接。

  DOI：

  10.1021/jacs.8b03509

文献信息

• [EN] PD(II)-CATALYZED ENANTIOSELECTIVE C-H ARYLATION OF FREE CARBOXYLIC ACIDS<br/>[FR] ARYLATION C-H ÉNANTIOSÉLECTIVE CATALYSÉE PAR PD(II) D'ACIDES CARBOXYLIQUES LIBRES
  申请人：SCRIPPS RESEARCH INST

  公开号：WO2019204477A1

  公开（公告）日：2019-10-24

  The invention includes procedures for stereoselective β-arylation of carboxylic acids having a β-carbon atom. For example, stereoselective arylation procedures include the following reactions: (I)

  这项发明涵盖了对具有β-碳原子的羧酸进行立体选择性β-芳基化的程序。例如，立体选择性芳基化程序包括以下反应：(I)
• Two Approaches to Diverting the Course of a Free-Radical Cyclization: Application of Cyclopropylcarbinyl Radical Fragmentations and Allenes as Radical Acceptors
  作者：Dexi Yang、Valerie Cwynar、Matthew G. Donahue、David J. Hart、Grace Mbogo

  DOI：10.1021/jo901834q

  日期：2009.11.20

  Free radical cyclization of 4 and 7 gave the expected cyclization-reduction products (5 and 8) along with considerable amounts of products derived from a cyclization-atom transfer-secondary cyclization process (6 and 9). Two approaches to avoiding these unexpected products were explored. Use of a cyclopropylcarbinyl fragmentation avoided the secondary cyclization reaction (25 or 43 -> 26 or 44), whereas use of an allene as a radical acceptor avoided the atom-transfer reaction altogether (49 -> 52).
• Pd(II)-Catalyzed Enantioselective C(sp³)–H Arylation of Free Carboxylic Acids
  作者：Peng-Xiang Shen、Liang Hu、Qian Shao、Kai Hong、Jin-Quan Yu

  DOI：10.1021/jacs.8b03509

  日期：2018.5.30

  chiral ligand based on an ethylenediamine backbone was developed to achieve Pd-catalyzed enantioselective C(sp3)-H arylation of cyclopropanecarboxylic and 2-aminoisobutyric acids without using exogenous directing groups. This new chiral catalyst affords new disconnection for preparing diverse chiral carboxylic acids from simple starting materials that are complementary to the various ring forming approaches

  开发了一种基于乙二胺骨架的单保护氨基乙胺手性配体，以实现 Pd 催化的环丙烷羧酸和 2-氨基异丁酸的对映选择性 C(sp3)-H 芳基化，而无需使用外源性导向基团。这种新的手性催化剂为从与各种成环方法互补的简单起始材料制备各种手性羧酸提供了新的断开连接。