3-(o-tolyl)propiolaldehyde | 521305-63-5

• 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: 3-(o-tolyl)propiolaldehyde
• 英文别名: 3-(o-Tolyl)propiolaldehyde；3-(2-methylphenyl)prop-2-ynal
• CAS: 521305-63-5
• 化学式: C₁₀H₈O
• 分子量: 144.173
• InChiKey: KMVFFSKXAFSDTF-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  11
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.1
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  3-(o-tolyl)propiolaldehyde 在 manganese(IV) oxide 、 正丁基锂 作用下， 以 四氢呋喃 、 正己烷 、 二氯甲烷 为溶剂， 生成 1,5-bis-(2-methylphenyl)-1,4-pentadiyn-3-one
  参考文献：
  名称：

  A Comparison of Linear Optical Properties and Redox Properties in Chalcogenopyrylium Dyes Bearing Ortho-Substituted Aryl Substituents and tert-Butyl Substituents

  摘要：

  A series of thiapyrylium pentamethine dyes (4 and 12-15) bearing 2,2'-di-tert-butyl-6,6'-diphenyl, 2,2'-di-tert-butyl-6,6'-bis(2,6-dimethylphenyl), 2,2'-di-tert-butyl-6,6'-bis(2-methylphenyl), 2,2',6,6'-tetrakis(2,6-dimethylphenyl), and 2,2',6,6'-tetrakis(2-methylphenyl) substituents, respectively, were prepared and their linear optical properties and electrochemical redox properties were measured and compared to thiapyrylium pentamethine dyes 3 and 5. The tert-butyl and 2,6-dimethylphenyl substituents give nearly identical chromophores with respect to values of lambda(max), molar extinction coefficients (epsilon), bandwidths at half-height (v(1/2)), and lack of absorption in the visible spectrum. The 2-methylphenyl substituent imparts linear optical properties that are intermediate between those of the tert-butyl and phenyl substituents. The 2,6-dimethylphenyl and 2-methylphenyl substituents impart greater oxidative stability based on anodic shifts in oxidation potential.

  DOI：

  10.1021/jo026645u
• 作为产物：
  描述：

  2-[(三甲基硅基)乙炔基]甲苯 在 正丁基锂 、 四丁基氟化铵 作用下， 以 四氢呋喃 、 正己烷 、 水 为溶剂， 生成 3-(o-tolyl)propiolaldehyde
  参考文献：
  名称：

  A Comparison of Linear Optical Properties and Redox Properties in Chalcogenopyrylium Dyes Bearing Ortho-Substituted Aryl Substituents and tert-Butyl Substituents

  摘要：

  A series of thiapyrylium pentamethine dyes (4 and 12-15) bearing 2,2'-di-tert-butyl-6,6'-diphenyl, 2,2'-di-tert-butyl-6,6'-bis(2,6-dimethylphenyl), 2,2'-di-tert-butyl-6,6'-bis(2-methylphenyl), 2,2',6,6'-tetrakis(2,6-dimethylphenyl), and 2,2',6,6'-tetrakis(2-methylphenyl) substituents, respectively, were prepared and their linear optical properties and electrochemical redox properties were measured and compared to thiapyrylium pentamethine dyes 3 and 5. The tert-butyl and 2,6-dimethylphenyl substituents give nearly identical chromophores with respect to values of lambda(max), molar extinction coefficients (epsilon), bandwidths at half-height (v(1/2)), and lack of absorption in the visible spectrum. The 2-methylphenyl substituent imparts linear optical properties that are intermediate between those of the tert-butyl and phenyl substituents. The 2,6-dimethylphenyl and 2-methylphenyl substituents impart greater oxidative stability based on anodic shifts in oxidation potential.

  DOI：

  10.1021/jo026645u

文献信息

• Evolution of Propargyl Ethers into Allylgold Cations in the Cyclization of Enynes
  作者：Eloísa Jiménez-Núñez、Mihai Raducan、Thorsten Lauterbach、Kian Molawi、César R. Solorio、Antonio M. Echavarren

  DOI：10.1002/anie.200902248

  日期：2009.8.3

  Shifty moves: 1,n‐Enynes with propargyl alcohol, ether, or silyl ether units undergo gold(I)‐catalyzed intramolecular 1,(n−1)‐migration via allylgold cations (see scheme). These intermediates have been trapped by olefins, indole, and by a formal intramolecular CH insertion. In the case of aryl‐substituted 1,7‐enynes, a cascade process involving a Nazarov‐type cyclization leads to 6,7‐dihydro‐5H‐benzo[c]fluorenes

  变动的动作：1，带有炔丙醇，醚或甲硅烷基醚单元的n-烯炔通过烯丙基阳离子经历金（I）催化的分子内1，（n -1）迁移（参见方案）。这些中间体已被烯烃，吲哚和正规的分子内CH插入所俘获。就芳基取代的1,7-炔而言，涉及纳扎罗夫型环化的级联反应会生成6,7-二氢-5 H-苯并[ c ]芴。
• An Enantioselective Claisen Rearrangement Catalyzed by N-Heterocyclic Carbenes
  作者：Juthanat Kaeobamrung、Jessada Mahatthananchai、Pinguan Zheng、Jeffrey W. Bode

  DOI：10.1021/ja103631u

  日期：2010.7.7

  of a chiral azolium salt (10 mol %), enols and ynals undergo a highly enantioselective annulation reaction to form enantiomerically enriched dihydropyranones via an N-heterocyclic carbene catalyzed variant of the Claisen rearrangement. Unlike other azolium-catalyzed reactions, this process requires no added base to generate the putative NHC-catalyst, and our investigations demonstrate that the counterion

  在手性唑盐 (10 mol%) 的存在下，烯醇和炔醇发生高度对映选择性的环化反应，通过 N-杂环卡宾催化的克莱森重排变体形成富含对映体的二氢吡喃酮。与其他唑鎓催化反应不同，该过程不需要添加碱来生成假定的 NHC 催化剂，我们的研究表明，唑鎓盐的抗衡离子在催化活性物质的形成中起着关键作用。详细的动力学研究消除了潜在的 1,4-加成机制；观察到的速率定律和激活参数与作为限速步骤的克莱森重排一致。该催化体系用于合成富含对映体的曲酸衍生物，
• Ag-Catalyzed Insertion of Alkynyl Carbenes into C–C Bonds of β-Ketocarbonyls: A Formal C(sp²) Insertion
  作者：Yongquan Ning、Qingmin Song、Paramasivam Sivaguru、Lizuo Wu、Edward A. Anderson、Xihe Bi

  DOI：10.1021/acs.orglett.1c04081

  日期：2022.1.21

  Here we report a silver-catalyzed alkynyl carbene insertion into β-ketocarbonyls using alkynyl N-nosylhydrazones as alkynyl carbene precursors, which provides access to trisubstituted allenyl ketones. This reaction represents the first example of an alkynyl carbene insertion into a C–C σ bond, affording products homologated with an sp2 carbon center. The products are useful substrates for further transformations

  在这里，我们报告了使用炔基N - nosylhydrazones 作为炔基卡宾前体的银催化炔基卡宾插入 β-酮羰基，这提供了获得三取代的烯基酮的途径。该反应代表了炔基卡宾插入 C–C σ 键的第一个例子，提供了与 sp 2碳中心同源的产物。该产品是用于进一步转化的有用底物。实验研究和理论计算表明，该反应通过逐步烯醇环丙烷化/逆醛醇途径进行。
• Enantioselective decarboxylative Mannich reaction of β-keto acids with <i>C</i>-alkynyl <i>N</i>-Boc <i>N</i>,<i>O</i>-acetals: access to chiral β-keto propargylamines
  作者：Cong-Cong Zhang、Li-Jun Chen、Bao-Chun Shen、Hui-Ding Xie、Wei Li、Zhong-Wen Sun

  DOI：10.1039/d1ob01555a

  日期：——

  related synthetic approaches remain limited. Therefore, a concise and efficient method for the enantioselective synthesis of β-keto propargylamines via chiral phosphoric acid-catalyzed asymmetric Mannich reaction between β-keto acids and C-alkynyl N-Boc N,O-acetals as easily available C-alkynyl imine precursors has been demonstrated here, affording a broad scope of β-keto N-Boc-propargylamines in high

  手性酮基取代的炔丙基胺是有机和药物合成领域必不可少的一类多功能化合物，受到了广泛关注，但相关的合成方法仍然有限。因此，通过手性磷酸催化 β-酮酸与C-炔基 N - Boc N , O-缩醛作为容易获得的C-炔基亚胺前体的不对称曼尼希反应，一种简洁有效的对映选择性合成 β-酮炔丙基胺的方法这里已经证明，提供广泛的 β-酮N-Boc-炔丙基胺具有高产率（高达 97%），通常具有高对映选择性（高达 97 : 3 er）。
• One-Pot Regiospecific Synthesis of Indolizines: A Solvent-Free, Metal-Free, Three-Component Reaction of 2-(Pyridin-2-yl)acetates, Ynals, and Alcohols or Thiols
  作者：Daji Yang、Yue Yu、Yuanheng Wu、Huiyi Feng、Xuechen Li、Hua Cao

  DOI：10.1021/acs.orglett.8b00835

  日期：2018.4.20

  A novel approach for the synthesis of indolizines from 2-(pyridin-2-yl)acetates, ynals, and alcohols or thiols has been developed. This MCR (multicomponent reaction) that proceeds under the solvent- and metal-free conditions has provided a straightforward path to construct indolizines. Furthermore, this reaction demonstrates other attractive features such as widely available starting materials, mild

  已经开发了一种由2-（吡啶-2-基）乙酸酯，乙醛和醇或硫醇合成吲哚嗪的新方法。这种在无溶剂和无金属条件下进行的MCR（多组分反应）为构建吲哚嗪提供了直接途径。此外，该反应还显示出其他吸引人的特征，例如可广泛使用的起始原料，温和的条件，良好的官能团耐受性和高效率。