4-甲氧基苯基氧化钠 | 1122-95-8

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯酚醚
• 中文名称: 4-甲氧基苯基氧化钠
• 英文名称: sodium 4-methoxyphenolate
• 英文别名: sodium p-methoxyphenoxide；4-methoxyphenol sodium salt；p-methoxyphenol sodium salt；sodium p-methoxyphenolate；sodium 4-methoxyphenoxide；sodium;4-methoxyphenolate
• CAS: 1122-95-8
• 化学式: C₇H₇O₂*Na
• 分子量: 146.121
• InChiKey: MYMOTVMHKLYQCM-UHFFFAOYSA-M

物化性质

• 熔点：
  200 °C

计算性质

• 辛醇/水分配系数(LogP)：
  -2.23
• 重原子数：
  10
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.14
• 拓扑面积：
  32.3
• 氢给体数：
  0
• 氢受体数：
  2

安全信息

• 海关编码：
  2909500000

反应信息

• 作为反应物：
  描述：

  4-甲氧基苯基氧化钠 生成 S-(4-methoxyphenyl) dimethylcarbamothioate
  参考文献：
  名称：

  The Conversion of Phenols to Thiophenols via Dialkylthiocarbamates¹

  摘要：

  DOI：

  10.1021/jo01350a023
• 作为产物：
  描述：

  4-methoxyphenylsulfate monoester 在 alkaline phosphatase 作用下， 以 various solvent(s) 为溶剂， 生成 4-甲氧基苯基氧化钠
  参考文献：
  名称：

  Do Electrostatic Interactions with Positively Charged Active Site Groups Tighten the Transition State for Enzymatic Phosphoryl Transfer?

  摘要：

  The effect of electrostatic interactions on the transition-state character for enzymatic phosphoryl transfer has been a subject of much debate. In this work, we investigate the transition state for alkaline phosphatase (AP) using linear free-energy relationships (LIFERs). We determined k(cat)/K-M for a series of aryl sulfate ester monoanions to obtain the Bronsted coefficient, beta(lg)., and compared the value to that obtained previously for a series of aryl phosphorothioate ester dianion substrates. Despite the difference in substrate charge, the observed Bronsted coefficients for AP-catalyzed aryl sulfate and aryl phosphorothioate hydrolysis (-0.76 +/- 0.14 and -0.77 +/- 0.10, respectively) are strikingly similar, with steric effects being responsible for the uncertainties in these values. Aryl sulfates and aryl phosphates react via similar loose transition states in solution. These observations suggest an apparent equivalency of the transition states for phosphorothioate and sulfate hydrolysis reactions at the AP active site and, thus, negligible effects of active site electrostatic interactions on charge distribution in the transition state.

  DOI：

  10.1021/ja0480421
• 作为试剂：
  描述：

  (E)-1-(2-甲氧基苯基)-N-苯基甲亚胺 、 丙腈 在 (三甲基硅基)乙酸乙酯 、 4-甲氧基苯基氧化钠 作用下， 以 四氢呋喃 为溶剂， 反应 0.25h， 以92%的产率得到3-(2-methoxyphenyl)-2-methyl-3-(phenylamino)propanenitrile
  参考文献：
  名称：

  Product-Catalyzed Addition of Alkyl Nitriles to Unactivated Imines Promoted by Sodium Aryloxide/Ethyl(trimethylsilyl)acetate (ETSA) Combination

  摘要：

  The first transition-metal-free addition of alkyl nitriles to unactivated irnines was developed using a catalytic combination of 4-MeOC6H4CNa and TMSCH2CO2Et to promote the reaction. The corresponding beta-amino nitriles are obtained in good to almost quantitative isolated yields under mild conditions. A mechanism involving an autocatalytic pathway is proposed on the basis of experimental observations.

  DOI：

  10.1021/jo802763b

文献信息

• Unexpected CO bond formation in Suzuki coupling of 4-chlorothieno[2,3-<i>d</i>]pyrimidines
  作者：Enrico Perspicace、Stéphanie Hesse、Gilbert Kirsch、Mehdi Yemloul、Claude Lecomte

  DOI：10.1002/jhet.107

  日期：2009.5

  Palladium-catalyzed Suzuki reactions were performed on 4-chlorothieno[2,3-d]pyrimidines under classical heating conditions and under microwave irradiation. Some unexpected results were obtained during this study as two kinds of compounds were isolated depending on the conditions used. A careful investigation of experimental details has shown that the expected CC bond formation occurred when degassed

  钯催化的Suzuki反应是在4-氯噻吩并[2,3- d ]嘧啶上在经典加热条件下和在微波辐射下进行的。在此研究中，由于根据所用条件分离出两种化合物，因此获得了一些出乎意料的结果。对实验细节的仔细研究表明，当使用脱气溶剂时（在传统加热和微波加热中）都发生了预期的C C键形成，而在使用前未用氩气对溶剂脱气时发生了意外的C O键形成。J.杂环化​​学。，46，459（2009）。
• Air Stable, Sterically Hindered Ferrocenyl Dialkylphosphines for Palladium-Catalyzed C−C, C−N, and C−O Bond-Forming Cross-Couplings
  作者：Noriyasu Kataoka、Quinetta Shelby、James P. Stambuli、John F. Hartwig

  DOI：10.1021/jo025732j

  日期：2002.8.1

  aryl halides coupled with acyclic or cyclic secondary alkyl- and arylamines, with primary alkyl- and arylamines, and with aryl- and primary alkylboronic acids. These last couplings provide the first general procedure for reaction of terminal alkylboronic acids with aryl halides without toxic or expensive bases. The ligand not only generates highly active palladium catalysts, but it is air stable in

  已通过两步合成程序以高收率制备了五苯基二茂铁基二叔丁基膦，并且已研究了由带有该配体的配合物催化的各种交叉偶联过程的范围。该配体为芳基卤化物胺化和Suzuki偶联产生了非常普通的钯催化剂。对于未活化的芳基溴化物或氯化物的胺化，观察到的营业额约为1000。另外，该配体的络合物在温和条件下催化形成选定的芳基醚。反应包括富电子和贫电子的芳基溴化物和氯化物。在含有该配体的催化剂的存在下，这些芳基卤化物与无环或环状仲烷基和芳基胺，伯烷基和芳基胺，以及芳基和伯烷基硼酸偶联。这些最后的偶联为末端烷基硼酸与芳基卤化物的反应提供了第一个通用方法，而没有毒性或昂贵的碱。该配体不仅产生高活性的钯催化剂，而且在溶液和固态中都是空气稳定的。该配体的钯（0）配合物也具有空气稳定性，为固体，仅与溶液中的氧气缓慢反应。
• [EN] A NEW METHOD OF 18F LABELLING AND INTERMEDIATE SALTS<br/>[FR] NOUVEAU PROCÉDÉ D'ÉTIQUETAGE DE 18F ET DE SELS INTERMÉDIAIRES
  申请人：NAT UNIV SINGAPORE

  公开号：WO2021126080A1

  公开（公告）日：2021-06-24

  Disclosed herein is a salt of formula I: where R1, X, n, R, R1, Y, m, p, q, Z and o are as defined herein. Also disclosed herein are methods of using said salts in chemical synthesis, such as to prepare compounds isotopically enriched in 18F for use in PET imaging, as well as methods to make the compounds of formula I.

  披露的是公式I的盐：其中R1、X、n、R、R1、Y、m、p、q、Z和o如本文所述定义。还披露了使用所述盐进行化学合成的方法，例如用于制备在正电子发射断层扫描（PET）成像中使用的18F同位素富集化合物，以及制造公式I化合物的方法。
• Frustrated Lewis-Pair-Meditated Selective Single Fluoride Substitution in Trifluoromethyl Groups
  作者：Dipendu Mandal、Richa Gupta、Amit K. Jaiswal、Rowan D. Young

  DOI：10.1021/jacs.9b12167

  日期：2020.2.5

  developed a generic protocol that allows a single substitution of one fluoride in trifluoromethyl groups with neutral phosphine and pyridine bases. The resulting phosphonium and pyridinium salts can be further functionalized via nucleophilic substitution, photoredox coupling and electrophilic transfer reactions allowing the generation of a vast array of difluoromethyl products.

  三氟甲基芳烃中的单一氟化物取代是一个持续的合成挑战，通常会导致“过度反应”，即多个氟化物被取代。该反应的发展将允许简单地获得目前对制药、农业化学和材料科学感兴趣的范围广泛的二氟甲基衍生物。使用受挫的路易斯对方法，我们开发了一个通用协议，允许用中性膦和吡啶碱单次取代三氟甲基中的一个氟化物。所得的鏻盐和吡啶盐可以通过亲核取代、光氧化还原偶联和亲电转移反应进一步官能化，从而产生大量二氟甲基产物。
• Copper promoted synthesis of diaryl ethers
  作者：Rajshekhar Ghosh、Ashoka G. Samuelson

  DOI：10.1039/b401179a

  日期：——

  An efficient protocol using copper based reagents for the coupling of aryl halides with phenols to generate diaryl ethers is described. A copper(I) complex, [Cu(CH3CN)4]ClO4, or the readily available copper(II) source, CuCO3·Cu(OH)2·H2O (in combination with potassium phosphate), can be used. Aryl halides and phenols with different steric and electronic demands have been used to assess the efficiency of the procedure. The latter source of copper gives better yields under all conditions.

  文中描述了一种利用基于铜的试剂实现芳基卤与酚偶联生成二芳基醚的高效协议。可以使用铜(I)配合物，例如[Cu(CH3CN)4]ClO4，或者易于获得的铜(II)源，即铜碳酸盐·氢氧化铜·水（结合磷酸钾）。根据不同的立体和电子需求，使用不同类型的芳基卤和酚来评估该过程的效率。在所有条件下，后一种铜源能够提供更好的产率。