2-acetoxyphenylacetylene

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯酚酯
• 英文名称: 2-acetoxyphenylacetylene
• 英文别名: 2-ethynylphenyl acetate；o-ethynylphenyl acetate；(2-ethynylphenyl) acetate
• 化学式: C₁₀H₈O₂
• 分子量: 160.172
• InChiKey: SGIGPCXCQZFJOZ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.1
• 重原子数：
  12
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.1
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  2-acetoxyphenylacetylene 在 dihydrogen hexachloroplatinate 、 lithium dimethylamide 作用下， 以 四氢呋喃 为溶剂， 反应 3.0h， 生成 2-[(E)-2-[methoxy-di(propan-2-yl)silyl]ethenyl]phenol
  参考文献：
  名称：

  Photochemically Removable Silyl Protecting Groups

  摘要：

  Several o-phenol-containing alkoxyvinylsilanes were prepared and their photochemistry was investigated. These materials were prepared via hydrosilylation of the corresponding o-acetoxy arylacetylenes. Two major classes of photochemical processes were identified in these reactants: trans --> cia isomerization, leading to an intramolecular nucleophilic substitution process at silicon, and 1,5-silyl shift, leading to an unsymmetrical dialkoxysilane. The major outcome of this work is a novel class of photochemically removable protecting groups. Two alkyl substitutions on silicon, the dimethyl and diisopropyl, were examined. The latter is more stable and is preferred for protecting groups that must tolerate multiple steps or reagents. Protection of alcohols is generally performed starting with the arylethynyl acetate, which can be subjected to hydrosilylation, alcohol substitution, and acetate deprotection without isolation of intermediates. Two groups were studied in detail, the phenol and 2 naphthol Vinyl silane derivatives. A variety of primary and secondary alcohols were protected with these reagents. These groups can be deprotected cleanly and in high yield by irradiation from 250 to 350 nm.

  DOI：

  10.1021/ja002370t
• 作为产物：
  描述：

  1-乙酰氧基-2-碘苯 在 bis-triphenylphosphine-palladium(II) chloride 、 copper(l) iodide 、 potassium fluoride dihydrate 、 三乙胺 作用下， 以 1,4-二氧六环 、 N,N-二甲基甲酰胺 为溶剂， 反应 11.0h， 生成 2-acetoxyphenylacetylene
  参考文献：
  名称：

  Benzofurans or Isochromenes via the Ring-Opening Cyclization of Cyclopropene Derivatives with Organolithiums

  摘要：

  A new and efficient approach to benzocycles from cyclopropene derivatives is described. Deprotection by organolithiums and subsequent ring-opening cyclization of the related 2-cyclopropenyl phenyl or benzyl acetates generated benzofurans and isochromenes in one pot.

  DOI：

  10.1021/ol2032009

文献信息

• Diversity-Oriented Synthesis of 3-Iodochromones and Heteroatom Analogues via ICl-Induced Cyclization
  作者：Chengxiang Zhou、Anton V. Dubrovsky、Richard C. Larock

  DOI：10.1021/jo0523722

  日期：2006.2.1

  The ICl-induced cyclization of heteroatom-substituted alkynones provides a simple, highly efficient approach to various 3-iodochromones and analogues. This process is run under mild conditions, tolerates various functional groups, and generally provides chromones in good to excellent yields. Subsequent palladium-catalyzed transformations afford a rapid increase in molecular complexity and a convenient

  ICl诱导的杂原子取代的炔酮的环化为各种3-碘色酮和类似物提供了一种简单，高效的方法。该过程在温和的条件下进行，可以耐受各种官能团，并且通常以高至优异的产率提供色酮。随后的钯催化转化使分子复杂性迅速增加，并方便地制备了多种功能取代的色酮，呋喃和多环化合物。碘硫代色素酮和碘喹啉酮也可通过类似的ICI诱导的环化反应制备。
• Synthesis of 2,3-Disubstituted Benzo[<i>b</i>]furans by the Palladium-Catalyzed Coupling of <i>o-</i>Iodoanisoles and Terminal Alkynes, Followed by Electrophilic Cyclization
  作者：Dawei Yue、Tuanli Yao、Richard C. Larock

  DOI：10.1021/jo051299c

  日期：2005.12.1

  2,3-Disubstituted benzo[b]furans are readily prepared under very mild reaction conditions by the palladium/copper-catalyzed cross-coupling of various o-iodoanisoles and terminal alkynes, followed by electrophilic cyclization with I2, PhSeCl, or p-O2NC6H4SCl. Aryl- and vinylic-substituted alkynes undergo electrophilic cyclization in excellent yields. Biologically important furopyridines can be prepared

  2,3-二取代的苯并[ b ]呋喃很容易在很温和的反应条件下通过钯/铜催化的各种邻碘苯甲醚和末端炔的交叉偶联反应，然后用I 2，PhSeCl或p-进行亲电环化而制得。 O 2 NC 6 H 4 SCl。芳基和乙烯基取代的炔烃以优异的收率进行亲电子环化。生物学上重要的呋喃吡啶可以通过这种方法以高产率制备。
• Organocatalytic Intramolecular [4+2] Cycloaddition between In Situ Generated Vinylidene <i>ortho</i> -Quinone Methides and Benzofurans
  作者：Xiaoyan Wu、Lu Xue、Dongmei Li、Shiqi Jia、Jun Ao、Jun Deng、Hailong Yan

  DOI：10.1002/anie.201707523

  日期：2017.10.23

  Described herein is the enantioselective construction of oxygen‐containing [5‐6‐5] tricyclic heterocycles by an organocatalyzed asymmetric [4+2] cycloaddition of vinylidene ortho‐quinone methides and benzofurans. According to this methodology, a series of oxygen‐containing [5‐6‐5] tricyclic heterocycles with various functional groups were synthesized in excellent enantio‐ and diastereoselectivities

  本文描述了通过亚乙烯基邻甲基醌和甲基苯并呋喃的有机催化不对称[4 + 2]环加成反应，对含氧[5-6-5]三环杂环的对映选择性。根据这种方法，合成了一系列具有各种官能团的含氧[5-6-5]三环杂环，具有出色的对映异构和非对映异构选择性（> 99％ee，> 20：1 dr）。此外，氘标记实验和高分辨率质谱表明，亚乙烯基邻位甲基苯醌中间体可能与2-乙炔基苯酚的质子重排有关。值得注意的是，该转化过程的催化剂负载量低至0.1 mol％，并且达到了克级合成。
• Tandem photochemical or thermal [1,5]-H, thermal [1,5]-Si migrations of vinyl silanes
  作者：Michael C. Pirrung、Yong Rok Lee

  DOI：10.1016/s0040-4039(00)61394-1

  日期：1993.12

  The irradiation or thermolysis of o-hydroxystryryl vinylsilanes results in migration of the silyl group to the phenolic oxygen via consecutive [1,5]-H and [1,5]-Si shifts.

  邻羟基苯乙烯基乙烯基硅烷的辐射或热解导致甲硅烷基通过连续的[1,5] -H和[1,5] -Si迁移而迁移至酚氧。
• [EN] AEROBIC OXIDATION SYSTEM CONTAINING SULFINIC ACID, SULFONIC ACID OR DERIVATIVES THEREOF AND PHOTOCATALYTIC OXIDATION METHOD THEREFOR<br/>[FR] SYSTÈME D'OXYDATION AÉROBIE CONTENANT DE L'ACIDE SULFINIQUE, DE L'ACIDE SULFONIQUE OU DES DÉRIVÉS ASSOCIÉS ET PROCÉDÉ D'OXYDATION PHOTOCATALYTIQUE CORRESPONDANT<br/>[ZH] 一种含亚磺酸、磺酸或其衍生物的需氧氧化体系及其光促氧化方法
  申请人：UNIV TSINGHUA

  公开号：WO2020155595A1

  公开（公告）日：2020-08-06

  公开了一种需氧氧化体系及其光促需氧氧化方法，该需氧氧化体系包括1)下述物质1a)～1d)的至少一种：1a)亚磺酸或其衍生物；1b)磺酸或其衍生物；1c)通过反应可以生成亚磺酸或其衍生物的化合物或混合物；1d)通过反应可以生成磺酸或其衍生物的化合物或混合物；和2)含分子氧的组分，包括氧气、含氧气的气体和可以原位生成氧分子的反应体系的原料中的至少一种。该需氧氧化体系用于氧化方法时，在光照条件下，无需添加光敏化试剂，室温下即可需氧氧化一系列化合物得到相应的氧化产物，降低了生产成本；另外，所述方法能够大幅度降低能耗，彻底解决由重金属和酸性溶剂带来的废弃物排放污染环境的问题，以及产品中金属残留的问题。