2-phenyl-4-pentynoic acid | 51632-38-3

• 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: 2-phenyl-4-pentynoic acid
• 英文别名: 2-phenylpent-4-ynoic acid；α-Propargyl-phenylessigsaeure；Phenylpropargylacetic acid
• CAS: 51632-38-3
• 化学式: C₁₁H₁₀O₂
• 分子量: 174.199
• InChiKey: HLLOQKAJNPXKKB-UHFFFAOYSA-N

物化性质

• 熔点：
  98.5 °C
• 沸点：
  89 °C(Press: 0.2 Torr)
• 密度：
  1.154±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  13
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.18
• 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-phenyl-4-pentynoic acid 在 N-碘代丁二酰亚胺 、 四丁基氢氧化铵 、 potassium hydrogencarbonate 作用下， 以 二氯甲烷 、 水 为溶剂， 反应 0.5h， 以81%的产率得到3-phenyl-5(E)-iodomethylidenetetrahydro-2-furanone
  参考文献：
  名称：

  Synthesis of halo enol lactones. Mechanism-based inactivators of serine proteases

  摘要：

  DOI：

  10.1021/ja00408a030
• 作为产物：
  描述：

  2-苯基-5-三甲基甲硅烷基-4-戊炔酸 在 四丁基氟化铵 作用下， 以 四氢呋喃 为溶剂， 反应 3.0h， 以89.7%的产率得到2-phenyl-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

• An Enantioselective Iodolactonization/Cross-Coupling Protocol for the Synthesis of Highly Substituted Enol Lactones
  作者：Christoph Fricke、Michael Wilking、Constantin G. Daniliuc、Ulrich Hennecke

  DOI：10.1002/ejoc.201800642

  日期：2018.6.29

  A sequence of catalytic enantioselective iodolactonization followed by Palladium‐catalyzed cross‐coupling provides rapid access to highly substituted enol lactones. With DHQD2PHAL as catalyst, moderate to very good enantioselectivities in the iodolactonization step can be obtained.

  一系列的催化对映选择性碘内酯化，然后进行钯催化的交叉偶联，可快速获得高度取代的烯醇内酯。用DHQD 2 PHAL作为催化剂，可以在碘内酯化步骤中获得中等到非常好的对映选择性。
• Synthesis of iodo(III) enol lactones via iodine(III)-induced lactonization of alkynoic acids. Structurally potential serine protease inactivators
  作者：Masahito Ochiai、Yoshikazu Takaoka、Yukio Masaki、Minako Inenaga、Yoshimitsu Nagao

  DOI：10.1016/s0040-4039(00)70655-1

  日期：——

  Iodine(III)-induced lactonization of 4- and 5-alkynoic acids utilizing a combination of iodosylbenzene and BF3-Et2O affords cyclic β-acyloxyvinyliodonium tetrafluoroborates, structurally potential serine protease inactivators.

  利用碘基苯和BF 3 -Et 2 O的组合，碘（III）诱导的4-和5-链烷酸的内酯化提供了环式β-酰氧基乙烯基碘化四氟硼酸酯，其在结构上是潜在的丝氨酸蛋白酶灭活剂。
• Au₂O₃ as a Stable and Efficient Catalyst for the Selective Cycloisomerization of γ-Acetylenic Carboxylic Acids to γ-Alkylidene-γ-Butyrolactones
  作者：Véronique Michelet、Patrick Toullec、Emilie Genin、Sylvain Antoniotti、Jean-Pierre Genêt

  DOI：10.1055/s-2008-1032108

  日期：——

  The high potential of commercially available Au2O3 as a catalyst in the cyclization of alkynes bearing carboxylic acids to the corresponding γ-alkylidene-γ-butyrolactones through a general, efficient and easy procedure is presented. The reaction shows a high degree of chemo-, regio-, and stereoselectivity. The 5-exo mode of cyclization and anti auration are a general trend for the Au2O3 catalyst.

  展示了市售金氧化物（Au2O3）作为催化剂，在通过一种通用、高效且简便的过程，将带有羧酸的炔烃环化为相应γ-烷叉基-γ-丁内酯中的高潜力。该反应表现出高度化学选择性、区域选择性和立体选择性。5-内型环化和反式金化是Au2O3催化剂的普遍趋势。
• Cyclisation of acetylenecarboxylic acid. Synthesis of γ-methylenebutyrolactones
  作者：Makoto Yamamoto

  DOI：10.1039/p19810000582

  日期：——

  Various γ-exo-methylenebutyrolactones have been synthesized in excellent yield by the cyclisation of acetylenecarboxylic acids in the presence of a catalytic amount of mercury(II) oxide. Cyclisation of terminal acetylene compounds[e.g.(1a)–(1e)]proceeded regioselectively to give γ-exo-methylenebutyrolactones as the sole product. Disubstituted acetylenes [(1f)–(1i)] also gave the (Z)-configurational

  各种γ -外型-methylenebutyrolactones已经在良好产率的乙炔基酸中的汞（催化量存在环化合成了II）氧化物。末端乙炔化合物环化[例如（1A） - （1E）]区域选择性地得到进行γ -外型-methylenebutyrolactones作为唯一的产物。二取代的乙炔[（1F） - （1i）中]也给出了（Ž）-configurational烯醇内酯，但少量的（的Ë）一-异构体γ -外烯醇内酯和δ内酯（α吡喃酮）也成立了。exo的光谱性质和立体化学还讨论了-烯醇内酯。
• 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。