苯乙酸,a-羟基-,1,1-二甲基乙基酯 | 117356-18-0

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 中文名称: 苯乙酸,a-羟基-,1,1-二甲基乙基酯
• 英文名称: tert-butyl 2-hydroxy-2-phenylacetate
• 英文别名: Tert-butyl hydroxy(phenyl)acetate
• CAS: 117356-18-0
• 化学式: C₁₂H₁₆O₃
• 分子量: 208.257
• InChiKey: HFQCAIQTDNARDZ-UHFFFAOYSA-N

物化性质

• 熔点：
  66-67 °C
• 沸点：
  301.5±22.0 °C(Predicted)
• 密度：
  1.095±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.1
• 重原子数：
  15
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.42
• 拓扑面积：
  46.5
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  苯乙酸,a-羟基-,1,1-二甲基乙基酯 在 四丁基溴化铵 、 potassium hydroxide 、 silver(l) oxide 作用下， 以 乙醚 、 水 、 甲苯 为溶剂， 反应 74.0h， 生成 allyloxy(phenyl)acetic acide
  参考文献：
  名称：

  Development of a Phase-Transfer-Catalyzed, [2,3]-Wittig Rearrangement

  摘要：

  An investigation into the use of phase-transfer catalysis for the [2,3]-sigmatropic rearrangement of allyloxy carbonyl compounds is described. Initial studies focused on identifying viable substrate classes that would undergo selective [2,3]-rearrangement under phase-transfer catalysis. Under certain conditions, the [2,3]-sigmatropic rearrangement of allyloxy carbonyl compounds takes place in the presence of a phase-transfer agent, providing a rare example of a phase-transfer-catalyzed unimolecular reaction. In the course of this investigation, it was found that catalysis is dependent on several variables including base concentration, catalyst structure, and substrate lipophilicity. Preliminary testing of chiral, nonracemic phase-transfer catalysts has shown promising levels of enantioselectivity for future development.

  DOI：

  10.1021/acs.joc.5b01759
• 作为产物：
  描述：

  tert-butyl phenylglyoxylate 在 sodium tetrahydroborate 作用下， 以 四氢呋喃 为溶剂， 反应 0.17h， 生成 苯乙酸,a-羟基-,1,1-二甲基乙基酯
  参考文献：
  名称：

  对映和化学选择性布朗斯台德酸/ Mg（nBu）2催化儿茶酚硼烷还原α-酮酯。

  摘要：

  已开发出第一对映体和化学选择性布朗斯台德酸催化的儿茶酚硼烷还原α-酮酯。α-羟基酯是在温和的反应条件下以实际上定量的产率和优异的对映选择性而获得的。稍作修饰，即可得到两种对映体，而不会损失任何选择性。

  DOI：

  10.1039/c4cc00427b

文献信息

• Protease inhibitors
  申请人：——

  公开号：US20020049316A1

  公开（公告）日：2002-04-25

  The present invention provides compounds of formula (I) which inhibit proteases, including cathepsin K, pharmaceutical compositions of such compounds, and methods for treating diseases of excessive bone loss or cartilage or matrix degradation, including osteoporosis; gingival disease including gingivitis and periodontitis; arthritis, more specifically, osteoarthritis and rheumatoid arthritis; Paget's disease; hypercalcemia or malignancy; and metabolic bone disease therewith.

  本发明提供了一种公式（I）的化合物，其抑制蛋白酶，包括卡特普辛K，以及这些化合物的药物组合物，以及治疗骨量过度流失或软骨或基质降解疾病的方法，包括骨质疏松症；牙龈疾病，包括牙龈炎和牙周炎；关节炎，更具体地说是骨关节炎和类风湿关节炎；帕吉特病；高钙血症或恶性肿瘤；以及代谢性骨病。
• METHODS AND COMPOSITIONS FOR PREVENTING OPIOID ABUSE
  申请人：Waterville Valley Technologies, Inc.

  公开号：US20160326182A1

  公开（公告）日：2016-11-10

  Abuse-resistant opioid compounds, drug delivery systems, pharmaceutical compositions comprising an opioid covalently bound to a chemical moiety are provided. Methods of delivering an active ingredient to a subject and methods of preventing opioid abuse are also provided.

  提供了耐滥用的阿片类化合物、药物输送系统、含有阿片类药物与化学基团共价结合的制药组合物。还提供了将活性成分输送给受试者的方法以及预防阿片类药物滥用的方法。
• Tyrosine phosphatase inhibitors
  申请人：——

  公开号：US20030144338A1

  公开（公告）日：2003-07-31

  A compound of the formula (I): 1 wherein X 1 and X 2 are the same or different and each is a bond or a spacer having 1 to 20 atom(s) in the main chain; one of R 1 and R 2 is a cycle group having substituent(s) selected from 1) an optionally substituted carboxy-C 1-6 alkoxy group and 2) an optionally substituted carboxy-C 1-6 aliphatic hydrocarbon group, wherein the cycle group optionally has additional substituent(s), and the other is an optionally substituted cycle group or a hydrogen atom; and R 3 , R 4 and R 5 are the same or different and each is a hydrogen atom or a substituent, or R 4 may link together with R 3 or R 5 to form an optionally substituted ring; provided that when R 3 is a hydrogen atom, R 4 is a hydrogen atom and R 5 is methyl, X 2 —R 2 is not 4-cyclohexylphenyl; when R 3 is 4-methoxyphenyl, R 4 is a hydrogen atom and R 5 is methyl, X 2 —R 2 is not 4-methoxyphenyl; and when R 1 or R 2 is a hydrogen atom, the adjacent X 1 or X 2 is not a C 1-7 alkylene; or a salt thereof exhibits a protein tyrosine phosphatase inhibitory action and is useful as a prophylactic or therapeutic agent for diabetes or the like.

  式（I）的化合物： 其中X1和X2相同或不同，每个都是主链中具有1至20个原子的键或间隔物； R1和R2中的一个是具有取代基的环基，所述取代基选自1）可选择地取代的羧基-C1-6烷氧基和2）可选择地取代的羧基-C1-6脂肪烃基，其中所述环基可选择地具有额外的取代基，另一个是可选择地取代的环基或氢原子；以及 R3、R4和R5相同或不同，每个是氢原子或取代基，或R4可以与R3或R5结合形成可选择地取代的环； 但是当R3是氢原子时，R4是氢原子且R5是甲基时，X2—R2不是4-环己基苯基；当R3是4-甲氧基苯基，R4是氢原子且R5是甲基时，X2—R2不是4-甲氧基苯基；当R1或R2是氢原子时，相邻的X1或X2不是C1-7烷基； 或其盐具有蛋白酪氨酸磷酸酶抑制作用，并且可用作糖尿病等疾病的预防或治疗剂。
• Ester Formation via Symbiotic Activation Utilizing Trichloroacetimidate Electrophiles
  作者：Nivedita S. Mahajani、Rowan I. L. Meador、Tomas J. Smith、Sarah E. Canarelli、Arijit A. Adhikari、Jigisha P. Shah、Christopher M. Russo、Daniel R. Wallach、Kyle T. Howard、Alexandra M. Millimaci、John D. Chisholm

  DOI：10.1021/acs.joc.9b00745

  日期：2019.6.21

  Trichloroacetimidates are useful reagents for the synthesis of esters under mild conditions that do not require an exogenous promoter. These conditions avoid the undesired decomposition of substrates with sensitive functional groups that are often observed with the use of strong Lewis or Brønsted acids. With heating, these reactions have been extended to benzyl esters without electron-donating groups. These inexpensive

  三氯乙亚氨酸酯是在温和条件下合成酯的有用试剂，不需要外源促进剂。这些条件避免了带有敏感官能团的底物发生不希望的分解，这种分解通常在使用强路易斯酸或布朗斯台德酸的情况下观察到。通过加热，这些反应已扩展为不具有给电子基团的苄基酯。这些廉价且方便的方法应在复杂基质中酯的形成中找到应用。
• Cobalt‐Catalyzed Transfer Hydrogenation of α‐Ketoesters and <i>N</i> ‐Cyclicsulfonylimides Using H ₂ O as Hydrogen Source
  作者：Yang Gao、Xuexin Zhang、Ronibala Devi Laishram、Jingchao Chen、Kangkui Li、Keyang Zhang、Guangzhi Zeng、Baomin Fan

  DOI：10.1002/adsc.201900636

  日期：2019.9.3

  A Co‐catalyzed effective transfer hydrogenation of various α‐ketoesters and N‐cyclicsulfonylimides by safe and environmentally benign H2O as hydrogen source is described. The reaction used easily available and easy to handle zinc metal as a reductant. Interestingly, the catalytic system does not require ligand for reduction of N‐cyclicsulfonylimides.

  描述了一种以安全和环境友好的H 2 O作为氢源对各种α-酮酸酯和N-环磺酰亚胺的共催化有效转移加氢方法。该反应使用容易获得并且易于处理锌金属作为还原剂。有趣的是，催化体系不需要用于还原N-环磺酰亚胺的配体。