methyl 2-chloro-5-phenylpent-2(Z),4(E)-dienoate

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: methyl 2-chloro-5-phenylpent-2(Z),4(E)-dienoate
• 英文别名: methyl (2Z,4E)-2-chloro-5-phenylpenta-2,4-dienoate
• 化学式: C₁₂H₁₁ClO₂
• 分子量: 222.671
• InChiKey: LKZNBSBEMAANHL-PAUBHIBZSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.7
• 重原子数：
  15
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.08
• 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：

  methyl 2,2-dichloro-3-hydroxy-5-phenylpent-4(E)-enoate 在 chromium dichloride 作用下， 以 四氢呋喃 为溶剂， 生成 methyl 2-chloro-5-phenylpent-2(Z),4(E)-dienoate
  参考文献：
  名称：

  (Z)-α-Haloacrylates:  An Exceptionally Stereoselective Preparation via Cr(II)-Mediated Olefination of Aldehydes with Trihaloacetates

  摘要：

  (Z)-alpha-Fluoro-, (Z)-alpha-chloro-, and (Z)-alpha-bromoacrylates were obtained with unprecedented yield and stereocontrol (>99%) via addition of the corresponding commercial trihaloacetates to aldehydes at room temperature using stoichiometric Cr(II) salts or catalytic Cr(II) with a regeneration system. The intermediate 2,2-dihalo-3-hydroxy adducts could be isolated in good yields under conditions of limited reagent at 0 degrees C.

  DOI：

  10.1021/ja029938d

文献信息

• Fe(0)-Mediated Synthesis of Tri- and Tetra-Substituted Olefins from Carbonyls:  An Environmentally Friendly Alternative to Cr(II)
  作者：J. R. Falck、Romain Bejot、Deb K. Barma、Anish Bandyopadhyay、Suju Joseph、Charles Mioskowski

  DOI：10.1021/jo061445u

  日期：2006.10.1

  carbonyls by activated polyhalides. In many instances, Fe(0) was equivalent or superior to Cr(II). Notably, Fe(0), but not Cr(II), proved compatible with a wide range of functionality, inter alia, unprotected phenol, aryl nitro, carboxylic acid, and alkyl nitrile. A surprising reversal of stereoselectivity for aldehydes versus ketones was observed using both metals. The resultant α-halo-α,β-unsaturated or α

  研究了Fe（0）作为Cr（II）的一种经济高效，环保的替代品，用于活化多卤化物对羰基进行烯化。在许多情况下，Fe（0）等于或优于Cr（II）。值得注意的是，事实证明，Fe（0）而不是Cr（II）与广泛的官能度兼容，尤其是与未保护的苯酚，芳基硝基，羧酸和烷基腈。使用两种金属均观察到醛相对于酮的立体选择性出乎意料的逆转。所得的α-卤代-α，β-不饱和或α，β-不饱和的羧酸，酯和腈是许多目标化合物中常见的结构元素，也是制备其他官能团的关键中间体。
• One-pot synthesis of (<i>E</i>)-α-chloro-α,β-unsaturated esters
  作者：Usama Karama

  DOI：10.3184/030823409x460678

  日期：2009.7

  Chlorination of a phosphonate anion derived in situ from methyl bis(2,2,2-trifluoroethoxy)phosphonoacetate 2 followed by the addition of aldehydes constitutes a stereoselective single flask procedure for the preparation of E-configured α-chloro-α,β-unsaturated esters.

  将双(2,2,2-三氟乙氧基)膦酰基乙酸甲酯 2 原位生成的膦酸阴离子氯化，然后加入醛类物质，构成了制备 E 型 α-氯-α,β-不饱和酯的立体选择性单瓶程序。
• Ru-catalyzed highly chemo- and enantioselective hydrogenation of γ-halo-γ,δ-unsaturated-β-keto esters under neutral conditions
  作者：Xin Ma、Wanfang Li、Xiaoming Li、Xiaoming Tao、Weizheng Fan、Xiaomin Xie、Tahar Ayad、Virginie Ratovelomanana-Vidal、Zhaoguo Zhang

  DOI：10.1039/c2cc30925d

  日期：——

  Finely-tuned ruthenium-catalyzed highly chemoselective and enantioselective hydrogenation of gamma-halo-gamma,delta-unsaturated-beta-keto esters at the carbonyl group was achieved under neutral reaction conditions (ee up to 97%). Both olefin and alkenyl halogen moieties, which are labile under hydrogenation conditions, remained untouched during the reaction.

  在中性反应条件下（ee高达97％），实现了钌的精细调节，催化了羰基上的gamma-卤代-gamma，δ-不饱和β-酮酸酯的高度化学选择性和对映选择性氢化。在氢化条件下不稳定的烯烃和烯基卤素部分都在反应过程中保持不变。
• Synthesis of dihalohydrins and tri- and tetra-substituted olefins
  申请人：Board of Regents, The University of Texas System

  公开号：US20040143125A1

  公开（公告）日：2004-07-22

  A novel synthesis reaction for highly stereospecific tri- and tetra-substituted olefins is described. A single stereoisomer of stable &agr;-halo-&agr;,&bgr;-ester is produced in high yield by the reaction of aldehyde or ketone with a trihalogenated compound such as trichloroacetate in the presence of CrCl 2 in a solvent. By varying the amount of CrCl 2 used, the stable dihalohydrin intermediate may be obtained as well.

  描述了一种用于高度立体特异性三取代和四取代烯烃的新合成反应。通过醛或酮与三卤代化合物（如三氯乙酸盐）在溶剂中在CrCl2存在下的反应，可以高产率地产生稳定的α-卤代-α，β-酯的单立体异构体。通过改变使用的CrCl2量，也可以获得稳定的二卤水合物中间体。
• (<i>Z</i>)-α-Haloacrylates:  An Exceptionally Stereoselective Preparation via Cr(II)-Mediated Olefination of Aldehydes with Trihaloacetates
  作者：D. K. Barma、Abhijit Kundu、Hongming Zhang、Charles Mioskowski、J. R. Falck

  DOI：10.1021/ja029938d

  日期：2003.3.1

  (Z)-alpha-Fluoro-, (Z)-alpha-chloro-, and (Z)-alpha-bromoacrylates were obtained with unprecedented yield and stereocontrol (>99%) via addition of the corresponding commercial trihaloacetates to aldehydes at room temperature using stoichiometric Cr(II) salts or catalytic Cr(II) with a regeneration system. The intermediate 2,2-dihalo-3-hydroxy adducts could be isolated in good yields under conditions of limited reagent at 0 degrees C.