ethyl (E)-2-methyleneundec-4-enoate | 145297-72-9

• 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: ethyl (E)-2-methyleneundec-4-enoate
• 英文别名: ethyl (E)-2-methylideneundec-4-enoate
• CAS: 145297-72-9
• 化学式: C₁₄H₂₄O₂
• 分子量: 224.343
• InChiKey: PRVIBPIBVQBHAF-ZHACJKMWSA-N

物化性质

• 沸点：
  292.0±19.0 °C(Predicted)
• 密度：
  0.891±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5
• 重原子数：
  16
• 可旋转键数：
  10
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.64
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  1-辛炔 在 tetrabutylammonium dihydrogen trifluoride 、 tetrakis(actonitrile)copper(I) hexafluorophosphate 、 (IPr)Pt(dvtms) 作用下， 以 乙腈 为溶剂， 反应 19.0h， 生成 ethyl (E)-2-methyleneundec-4-enoate
  参考文献：
  名称：

  四丁基氟化铵作为铜催化乙烯基硅烷交叉偶联反应的有效活化剂

  摘要：

  乙烯基硅烷是交叉偶联反应中通用且高效的亲核试剂。本文描述了在几种铜催化的乙烯基硅烷交叉偶联中使用四丁基二氟化铵作为温和、廉价且可扩展的活化剂。

  DOI：

  10.1055/s-0036-1588504

文献信息

• Preparation of Functionalized Diorganomagnesium Reagents in Toluene via Bromine or Iodine/Magnesium-Exchange Reactions
  作者：Alexandre Desaintjean、Fanny Danton、Paul Knochel

  DOI：10.1055/a-1551-4093

  日期：2021.12

  Br/Mg-exchange reaction using reagents of the general formula R2Mg (R = sBu, Mes). Highly sensitive functional groups, such as triazene or nitro, are tolerated in these exchange reactions, enabling the synthesis of various functionalized (hetero)arene and alkene derivatives after quenching with several electrophiles including allyl bromides, acyl chlorides, aldehydes, ketones, and aryl iodides.

  在 –78 °C 和 25 °C 之间，通过 I/Mg 或 Br/Mg 交换反应，在甲苯中，在 10 到 120 分钟内，使用以下试剂制备各种多官能化二（杂）芳基和二烯基镁试剂通式 R2Mg (R = sBu, Mes)。在这些交换反应中可以耐受三氮烯或硝基等高度敏感的官能团，在用烯丙基溴、酰氯、醛、酮和芳基碘等多种亲电试剂淬灭后，可以合成各种功能化的（杂）芳烃和烯烃衍生物.
• Preparation of polyfunctional diorganomercurials and their transmetallation to diorganozincs. Applications to the preparation of optically active secon
  作者：Michael J. Rozema、Duddu Rajagopal、Charles E. Tucker、Paul Knochel

  DOI：10.1016/0022-328x(92)88002-z

  日期：1992.10

  Two new methods of preparation of functionalized diorganomercurials have been developed. The first method involves a substitution reaction of (ICH2)2Hg with zinc-copper reagents FG-RCu(CN)ZnI in THF/DMF at - 60-degrees-C. Functional groups such as an ester, nitrile, ketone, phosphonate, halide, and boronic ester are tolerated in this reaction. The second method involves a reductive transmetallation between polyfunctional organozinc halides and mercurous chloride (Hg2Cl2). This very convenient procedure provides a rapid route to various functionalized diorganomercurials in good yields (61-89% yield). The synthetic utility of these mercury organometallics is demonstrated. Their transmetallation with zinc dust (toluene, 80-degrees-C, 3-5 h) affords dialkylzincs which add enantioselectively to aldehydes in the presence of a catalytic amount (20 mol%) of the norephedrine derivative 13. This transmetallation can also be used to prepare stereoselectively (E)-alkenylzinc halides (> 98% E). Addition of Cl(H)ZrCp2 to (E)-5-chloropentenylzinc bromide in CH2Cl2 (25-degrees-C, 1 min) affords a 1,1-bimetallic of zinc and zirconium Cl(CH2)4CH(ZnBr)ZrCp2(Cl) which reacts stereoselectively with an aldehyde providing the (E)-disubstituted olefin (49% yield; 100% E).