2-(对甲苯基)丙醛 | 99-72-9

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 异戊烯醇脂质
• 中文名称: 2-(对甲苯基)丙醛
• 中文别名: 对甲龙葵醛
• 英文名称: 2-(4-methylphenyl)propanal
• 英文别名: 2-(p-tolyl)propanal
• CAS: 99-72-9
• 化学式: C₁₀H₁₂O
• 分子量: 148.205
• InChiKey: JTZWVKUZBNHSSW-UHFFFAOYSA-N

物化性质

• 沸点：
  208.81°C (rough estimate)
• 密度：
  0.8884 (rough estimate)
• LogP：
  2.59
• 物理描述：
  Colourless oily liquid; Intense, sweet, refreshing aroma similar to peppermint
• 溶解度：
  Soluble in oils; Insoluble in water
• 折光率：
  1.513-1.517
• 保留指数：
  1210

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  11
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.3
• 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：

  2-(对甲苯基)丙醛 在 N-(4-nitrobenzenesulfonyl)-3,3-dimethyloxaziridine 、 C₂₅H₂₆N₂O 、 碳酸氢钠 、 三氟乙酸 作用下， 以 四氢呋喃 为溶剂， 生成 2-Hydroxy-2-(4-methylphenyl)propanal
  参考文献：
  名称：

  A Simple Primary Amine Catalyst for Enantioselective α-Hydroxylations and α-Fluorinations of Branched Aldehydes

  摘要：

  A new primary amine catalyst for the asymmetric a-hydroxylation and a-fluorination of alpha-branched aldehydes is described. The products of the title transformations are generated in excellent yields with high enantioselectivities. Both processes can be performed within short reaction times and on gram scale. The similarity in results obtained in both reactions, combined with computational evidence, implies a common basis for stereoinduction and the possibility of a general catalytic mechanism for a-functionalizations. Promising initial results in alpha-amination and alpha-chlorination reactions support this hypothesis.

  DOI：

  10.1021/acs.orglett.5b01193
• 作为产物：
  描述：

  1-甲基-4-(1-甲基乙烯基)苯 在 dichlororuthenium(IV) meso-tetrakis(2,6-dichlorophenyl)porphyrin 2,6-二氯吡啶N-氧化物 作用下， 以 氘代氯仿 为溶剂， 反应 0.5h， 以91%的产率得到2-(对甲苯基)丙醛
  参考文献：
  名称：

  一种实用且温和的方法，用于通过钌（IV）-卟啉催化剂的环氧化异构化将末端烯烃高度选择性地转化为醛。

  摘要：

  DOI：

  10.1002/anie.200460545

文献信息

• Surface bonded Rh-bis(diarylphosphine) on magnetic nanoparticles as a recyclable catalyst for hydroformylation of olefins
  申请人：King Fahd University of Petroleum and Minerals

  公开号：US09480978B1

  公开（公告）日：2016-11-01

  A functionalized nanomaterial having an average particles size of less than 10 nm comprising an iron oxide nanoparticle core and a bis(diarylphosphinomethyl) dopamine based ligand layer anchored to the iron oxide nanoparticle core is disclosed. In addition, a catalyst composition for use in a variety of chemical transformations wherein the bisphosphine groups of the functionalized nanomaterial chelate a catalytic metal is disclosed. In addition, a method for producing the functionalized nanomaterial and a method for the hydroformylation of olefins to aldehydes employing the functionalized nanomaterial with high conversion percentage and high selectivity are disclosed.

  一种功能化纳米材料，平均粒径小于10纳米，包括铁氧化物纳米颗粒核和基于双(二芳基膦甲基)多巴胺的配体层，配体层锚定在铁氧化物纳米颗粒核上。此外，还公开了一种用于各种化学转化的催化剂组合物，其中功能化纳米材料的双膦基团螯合催化金属。此外，还公开了一种生产功能化纳米材料的方法，以及一种利用具有高转化率和高选择性的功能化纳米材料进行烯烃水合甲醛化的方法。
• Mild Iridium‐Catalysed Isomerization of Epoxides. Computational Insights and Application to the Synthesis of β‐Alkyl Amines
  作者：Albert Cabré、Juanjo Cabezas‐Giménez、Giuseppe Sciortino、Gregori Ujaque、Xavier Verdaguer、Agustí Lledós、Antoni Riera

  DOI：10.1002/adsc.201900372

  日期：2019.8.5

  The isomerization of epoxides to aldehydes using the readily available Crabtree's reagent is described. The aldehydes were transformed into synthetically useful amines by a one‐pot reductive amination using pyrrolidine as imine‐formation catalyst. The reactions worked with low catalyst loadings in very mild conditions. The procedure is operationally simple and tolerates a wide range of functional groups

  描述了使用容易获得的Crabtree试剂将环氧化物异构化为醛的方法。使用吡咯烷作为亚胺形成催化剂，通过一锅还原胺化将醛转化为合成有用的胺。该反应在非常温和的条件下以较低的催化剂负载量进行。该过程操作简单，并且可以接受各种功能组。DFT对其机理的研究表明，异构化是通过具有低能垒的氢化铱机理进行的，与温和的反应条件相符。
• Activation of Alcohols with Carbon Dioxide: Intermolecular Allylation of Weakly Acidic Pronucleophiles
  作者：Simon B. Lang、Theresa M. Locascio、Jon A. Tunge

  DOI：10.1021/ol502023d

  日期：2014.8.15

  coupling of allyl alcohols with nitroalkanes, nitriles, and aldehydes using catalytic Pd(PPh3)4 has been accomplished via activation of C–OH bonds with CO2. The in situ formation of carbonates from alcohols and CO2 facilitates oxidative addition to Pd to form reactive π-allylpalladium intermediates. In addition, the formation of a strong base activates nucleophiles toward the reaction with the π-allylpalladium

  使用催化 Pd(PPh 3 ) 4的烯丙醇与硝基烷烃、腈和醛的直接偶联是通过用 CO 2活化 C-OH 键来实现的。由醇和CO 2原位形成碳酸盐有利于Pd的氧化加成，形成反应性π-烯丙基钯中间体。此外，强碱的形成会激活亲核试剂与 π-烯丙基钯亲电子试剂发生反应。总体而言，这种原子经济反应无需使用外部碱即可提供新的 C-C 键，并生成水作为唯一的副产物。
• Vinylamine—XX
  作者：H. Ahlbrecht、W. Funk、M.Th. Reiner

  DOI：10.1016/0040-4020(76)80066-x

  日期：1976.1

  Substituted 2-aryl-propionaldehydes tautomerize in dimethyl sulfoxide to the corresponding enoles. The ratio of the tautomers can be described by Hammett σ-values, as in the case of imin-enamine-tautomeric 2-aryl-propionaldehyde methylimines. This is the first example of a linear free energy relationship between the two forms of tautomerism.

  取代的2-芳基-丙醛在二甲基亚砜中互变异构成相应的烯醇。如在亚胺-烯胺-互变异构体2-芳基-丙醛甲基亚胺的情况下，互变异构体的比率可以由哈米特σ值描述。这是互变异构的两种形式之间线性自由能关系的第一个例子。
• Enantioselective organocatalytic formal allylation of α-branched aldehydes
  作者：Eduardo Rodrigo、Sara Morales、Sara Duce、José Luis García Ruano、M. Belén Cid

  DOI：10.1039/c1cc14909a

  日期：——

  Heteroarylvinyl sulfone 1 has been successfully used as a new sulfonyl Michael acceptor in aminocatalytic reactions with branched aldehydes. Subsequent one-pot Julia–Kocienski olefination allows the challenging preparation of enantiomerically pure α-allylated aldehydes bearing C-α quaternary carbons.

  成功地，异芳基乙烯砜 1 被用作新的磺酰迈克尔受体，在含有支链醛的胺催化反应中。随后的单锅法 Julia–Kocienski 烯化反应使得制备具有 C-α 季碳的纯手性 α-烯丙基化醛类变得具有挑战性。