2-methoxycarbonyl-1-(but-3'-ynyl)-4-methylenebutyrolactone | 1032192-52-1

• 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: 2-methoxycarbonyl-1-(but-3'-ynyl)-4-methylenebutyrolactone
• 英文别名: Methyl 3-but-3-ynyl-5-methylidene-2-oxooxolane-3-carboxylate
• CAS: 1032192-52-1
• 化学式: C₁₁H₁₂O₄
• 分子量: 208.214
• InChiKey: BCSZILVBHHQTJM-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.5
• 重原子数：
  15
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.45
• 拓扑面积：
  52.6
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  2-(methoxycarbonyl)-2-(prop-2-ynyl)hex-5-ynoic acid 在 gold (III) oxide 作用下， 以 乙腈 为溶剂， 反应 2.0h， 以80%的产率得到2-methoxycarbonyl-1-(but-3'-ynyl)-4-methylenebutyrolactone
  参考文献：
  名称：

  Au₂O₃ as a Stable and Efficient Catalyst for the Selective Cycloisomerization of γ-Acetylenic Carboxylic Acids to γ-Alkylidene-γ-Butyrolactones

  摘要：

  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。

  DOI：

  10.1055/s-2008-1032108

文献信息

• 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。
• Novel Pd heterogeneous catalysts for cycloisomerisation of acetylenic carboxylic acids
  作者：Florentina Neaţu、Loredana Proteşescu、Mihaela Florea、Vasile I. Pârvulescu、Cristian M. Teodorescu、Nicoleta Apostol、Patrick Y. Toullec、Véronique Michelet

  DOI：10.1039/c0gc00258e

  日期：——

  The Pd-TPPTS complex (TPPTS - trisodium salt of 3,3′,3′′-phosphanetriyl benzenesulfonic acid) and PdCl42− salt heterogenised onto Zn2AlNO3 layered double hydroxide (LDH) using an ion-exchange procedure, have been shown to be efficient green catalysts in the cycloisomerisation reaction of acetylenic carboxylic acids to the corresponding 5-membered heterocycles.

  Pd-TPPTS配合物（TPPTS-三（3,3'，3''-膦酸基）苯磺酸三钠盐）和PdCl42−盐通过离子交换程序负载到Zn2AlNO3层状双氢氧化物（LDH）上，已被证明在炔酸的环异构化反应中是高效的绿色催化剂，能够生成相应的5元杂环。
• INTRAMOLECULAR CYCLIZATION OF γ-ACETYLENIC ACIDS USING DENDRIMER-ENCAPSULATED Pd2+ CATALYSTS
  作者：Kiyotomi Kaneda、Zen Maeno、Tomoo Mizugaki、Koichiro Jitsukawa、Takato Mitsudome

  DOI：10.3987/com-12-s(n)96

  日期：——

  Polyamine dendrimer-encapsulated Pd2+ catalysts were prepared by complexation of PdCl2 with internal tertiary amino groups of the dendrimer. The fifth-generation Pd2+ dendrimer catalyst showed cooperative catalysis between Pd2+ species and the internal nanocavity consisting of regularly arranged tertiary amino groups to promote the intramolecular cyclization of gamma-acetylenic acids efficiently.
• W(CO)5(L)-Catalyzed Cyclization of α-Alkynyl-β-dicarbonyl Derivatives: Synthesis of Methylenelactones, Furans, and Methylenecyclopentanes
  作者：Sunggak Kim、Xiangjian Meng

  DOI：10.1055/s-0032-1316536

  日期：2012.8

  W(CO)(5)(L)-Catalyzed cyclization of alpha-alkynyl-beta-keto acids, keto esters, and diketones provides methylenelactones, furans, and methylenecyclopentanes via 5-exo-dig cyclization. Also, the present approach can be further applied to 5-endo-dig cyclization.