2-benzyl-4-pentynoic acid | 96017-60-6

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 苯丙酸
• 英文名称: 2-benzyl-4-pentynoic acid
• 英文别名: 2-benzylpent-4-ynoic acid；2-benzyl-4-pentyn-1-oic acid
• CAS: 96017-60-6
• 化学式: C₁₂H₁₂O₂
• 分子量: 188.226
• InChiKey: GSVVTPBTPJEWDT-UHFFFAOYSA-N

物化性质

• 沸点：
  325.7±35.0 °C(Predicted)
• 密度：
  1.126±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  14
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  37.3
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  2-benzyl-4-pentynoic acid 在 N-碘代丁二酰亚胺 、 四丁基氢氧化铵 、 碘 、 碳酸氢钠 作用下， 以 二氯甲烷 、 水 为溶剂， 反应 90.5h， 生成 3-benzyl-5(Z)-(iodomethylene)tetrahydro-2-furanone
  参考文献：
  名称：

  Ynenol lactones: synthesis and investigation of reactions relevant to their inactivation of serine proteases

  摘要：

  DOI：

  10.1021/ja00278a038
• 作为产物：
  描述：

  diethyl 2-benzyl-2-(prop-2-yn-1-yl)malonate 在 sodium hydroxide 作用下， 以 乙醇 为溶剂， 反应 6.0h， 生成 2-benzyl-4-pentynoic acid
  参考文献：
  名称：

  Design, Synthesis, and Structure−Activity Relationships of Haloenol Lactones:  Site-Directed and Isozyme-Selective Glutathione S-Transferase Inhibitors

  摘要：

  Overexpression of glutathione S-transferase (GST), particularly the GST-pi isozyme, has been proposed to be one of the biochemical mechanisms responsible for drug resistance in cancer chemotherapy, and inhibition of overexpressed GST has been suggested as an approach to combat GST-induced drug resistance. 3-Cinnamyl-5(E)-bromomethylidenetetrahydro-2-furanone (1a), a lead compound of site-directed GST-pi inactivator, has been shown to potentiate the cytotoxic effect of cisplatin on tumor cells. As an initial step to develop more potent and more selective haloenol lactone inactivators of GST-pi, we examined the relationship between the chemical structures of haloenol lactone derivatives and their GST inhibitory activity. A total of 16 haloenol lactone derivatives were synthesized to probe the effects of (1) halogen electronegativity, (2) electron density of aromatic rings, (3) molecular size and rigidity, (4) lipophilicity, and (5) aromaticity on the potency of GST-pi inactivation. The inhibitory potency of each compound was determined by time-dependent inhibition tests, and recombinant human GST-pi was used to determine their inhibitory activity. Our structure-activity relationship studies demonstrated that (1) reactivity of the halide leaving group plays a weak role in GST inactivation by the haloenol lactones, (2) aromatic electron density may have some influence on the potency of GST inactivation, (3) high rigidity likely disfavors enzyme inhibition, (4) lipophilicity is inversely proportional to enzyme inactivation, and (5) an unsaturated system may be important for enzyme inhibition. This work facilitated understanding of the interaction of GST-pi with haloenol lactone derivatives as site-directed and isozyme-selective inactivators, possibly potentiating cancer chemotherapy.

  DOI：

  10.1021/jm0499615

文献信息

• Palladium(II) catalyzed cyclization of alkynoic acids
  作者：Claude Lambert、Kiitiro Utimoto、Hitosi Nozaki

  DOI：10.1016/s0040-4039(01)81594-x

  日期：——

  Under the catalytic action of palladium(II) in the presence of triethylamine, 3-, 4-, and 5-alkynoic acids afford 3-buten-4-olides, 4-penten-4-olides, and 5-hexen-5-olide, respectively, in good to excellent yields.

  在三乙胺存在下，在钯（II）的催化作用下，3-，4-和5-链烷酸可生成3-buten-4-olides，4-penten-4-olides和5-hexen-5-5-分别以良至优的收率获得乙内酰胺。
• Improvement process for debrominative rearrangements
  申请人：MERRELL DOW PHARMACEUTICALS INC.

  公开号：EP0370153A1

  公开（公告）日：1990-05-30

  This invention relates to an improvement in the standard procedures involving a debrominative rearrangement reaction of a terminal dibromoolefin with activated magnesium in tetrahydrofuran.

  这项发明涉及改进标准程序，涉及将末端二溴烯与四氢呋喃中活化的镁进行去溴重排反应。
• Remarkable Electronic and Steric Effects in the Nitrile Biotransformations for the Preparation of Enantiopure Functionalized Carboxylic Acids and Amides:  Implication for an Unsaturated Carbon−Carbon Bond Binding Domain of the Amidase
  作者：Ming Gao、De-Xian Wang、Qi-Yu Zheng、Zhi-Tang Huang、Mei-Xiang Wang

  DOI：10.1021/jo070581b

  日期：2007.8.1

  various functionalized racemic nitriles catalyzed by Rhodococcus erythropolis AJ270, a nitrile hydratase/amidase-containing microbial whole-cell catalyst, were studied. While the nitrile hydratase exhibits high catalytic efficiency but very low enantioselectivity against almost all nitrile substrates examined, the amidase is very sensitive toward the structure of the amides. The release of the steric crowdedness

  红球菌催化各种功能化外消旋腈的生物转化研究了含腈水合酶/酰胺酶的微生物全细胞催化剂AJ270。尽管腈水合酶显示出高的催化效率，但对几乎所有所检测的腈底物的对映选择性都非常低，但酰胺酶对酰胺的结构非常敏感。围绕基质立体中心的空间拥挤的释放以及向基质中引入不饱和碳-碳键导致反应速率的显着加速和对映选择性的显着提高。腈的生物转化提供了独特的，高产的合成路线，可合成被烯丙基，炔丙基，烯基或乙烯基官能化的高度对映体纯的羧酸和酰胺。H-喹啉-2-酮衍生物。
• Ligand effect of bulky 2,2-dialkyl-1-phosphaethenes on Au-catalyzed cycloisomerization of 1,6-enynes and lactonization of pent-4-ynoic acids
  作者：Shigekazu Ito、Shuhei Kusano、Noboru Morita、Koichi Mikami、Masaaki Yoshifuji

  DOI：10.1016/j.jorganchem.2009.09.040

  日期：2010.1

  2,2-Dimethyl- and 2-benzyl-2-methyl-1-(2,4,6-tri-tert-butylphenyl)-1-phosphaethenes were employed as ligand of mononuclear chlorogold(I) complexes, which catalyzed cycloisomerization of 1,6-enyne affording vinylcyclopentene exclusively in the absence of silver co-catalyst. The reaction mechanisms are discussed based on DFT calculations. In addition to the cycloisomerization, the phosphaalkene-chlorogold(I) complexes catalyzed cyclization of pent-4-ynoic acids providing gamma-methylene-gamma-lactones under basic conditions. (C) 2009 Elsevier B.V. All rights reserved.
• Iodobenzene-catalysed iodolactonisation using sodium perborate monohydrate as oxidant
  作者：Hongjun Liu、Choon-Hong Tan

  DOI：10.1016/j.tetlet.2007.09.078

  日期：2007.11

  A convenient approach has been developed for iodolactonisation using iodobenzene as catalyst. The active reagent was generated in situ with tetra-n-butylammonium iodide (TBAI) and hypervalent iodine reagent, diacetoxyiodobenzene (PIDA). PIDA, in turn, was generated in situ using a catalytic amount of iodobenzene with sodium perborate monohydrate as the stoichiometric oxidant. A variety of olefinic acids including delta-pentenoic acids, delta-pentynoic acids and delta-hexynoic acid gave high yields of lactones using this methodology. (C) 2007 Elsevier Ltd. All rights reserved.