diethyl allyl(2-cyanoethyl)malonate | 131702-86-8

• 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: diethyl allyl(2-cyanoethyl)malonate
• 英文别名: 1,3-diethyl 2-allyl-2-(2-cyanoethyl)malonate；diethyl 2-(2-cyanoethyl)-2-prop-2-enylpropanedioate
• CAS: 131702-86-8
• 化学式: C₁₃H₁₉NO₄
• 分子量: 253.298
• InChiKey: NHMANADKRAOZAK-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.98
• 重原子数：
  18.0
• 可旋转键数：
  8.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.62
• 拓扑面积：
  76.39
• 氢给体数：
  0.0
• 氢受体数：
  5.0

反应信息

• 作为反应物：
  描述：

  diethyl allyl(2-cyanoethyl)malonate 在 氢氧化钾 作用下， 以 乙醇 为溶剂， 反应 48.0h， 以100%的产率得到allyl(2-cyanoethyl)malonic 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
• 作为产物：
  描述：

  烯丙基丙二酸二乙酯 、 丙烯腈 在 盐酸 、 potassium tert-butylate 作用下， 生成 diethyl allyl(2-cyanoethyl)malonate
  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

• Metal-Free Direct 1,6- and 1,2-Difunctionalization Triggered by Radical Trifluoromethylation of Alkenes
  作者：Lin Huang、Sheng-Cai Zheng、Bin Tan、Xin-Yuan Liu

  DOI：10.1021/acs.orglett.5b00479

  日期：2015.3.20

  A metal-free direct remote C-H functionalization triggered by radical trifluoromethylation of alkenes was explored, realizing highly selective 1,6-difunctionalization of alkenes toward valuable trifluoromethyl alpha-hydroxycarbonyl compounds. Furthermore, a metal-free direct intermolecular regioselective 1,2-oxytrifluoromethylation of alkenes is also disclosed. With Tognis reagent as both the CF3 source and oxidant, the reaction exhibits a broad substrate scope with excellent functionality tolerance under mild metal-free conditions, thus showing great potential for synthetic utility.
• Cyclizations in the homolytic reactions of unsaturated nitriles withtert-butylmercury halides in the presence of proton donors
  作者：Glen A. Russell、Ping Chen

  DOI：10.1002/(sici)1099-1395(1998100)11:10<715::aid-poc30>3.0.co;2-e

  日期：1998.10

  Cyclizations are observed in the homolytic reactions of t-BuHgI with CH2=CHCH2YCH2CN [Y = CH2, O, CMe2, C(CO2Et)(2), NCH2CN] and CH2=CHCH2CH2YCH2CN [Y = CH2, O, C(CO2Et)(2)] in Me2SO in the presence of hydriodic acid. Only with Y = C(CO2Et)(2) does the adduct radical, t-BuCH2(C) over dot HCH2YCH2CN, undergo facile 5-exo cyclization in the absence of a proton donor. The other 5-exo and all 6-exo cyclizations require substrate protonation to yield t-BuCH2CH(CH2)(n)YCH2C=NH+ (n = 1, 2), which cyclizes readily to the iminium radical cation followed by electron transfer with I- or t-BuHgI2- to form the imine as a precursor to the cyclopentanone or cyclohexanone upon hydrolysis. For CH2=CHCH2C(CO2Et)(2)CH2CN the formation of the cyclopentanone is dramatically promoted by NH4I in the dark in the absence of any other acid. In this case, where cyclization of the adduct radical occurs readily without substrate activation, protonation of the cyclized iminyl radical allows the electron transfer with I- or t-BuHgI2- to occur with regeneration of t-Bu-.. A similar effect is observed with CH2=CHCH2C(CO2Et)(2)CH2N3 where only a slow reaction is observed upon photolysis with t-BuHgI in the absence of NH4I, although apparently cyclization of t-BuCH2(C) over dot HCH2C(CO2Et)(2)CH2N3 (with loss of N-2) occurs readily. In the presence of NH4I the cyclized aminyl radical can be protonated and the resulting amine radical cation readily reduced by I- or t-BuHgI2- to continue a chain process. With the thioesters CH2=CHCH2YCH2C(O)SPh [Y = O, CH2, CMe2, C(CO2Et)(2)] significant cyclization upon photolysis with t-BuHgX occurred only for Y = C(CO2Et)(2). (C) 1998 John Wiley & Sons, Ltd.
• 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：——