3-hydroxy-2-methyl-2-phenylpropanoic acid | 4370-81-4

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羟基酸及其衍生物
• 英文名称: 3-hydroxy-2-methyl-2-phenylpropanoic acid
• 英文别名: α-Methyltropasaeure；2-Methyl-2-phenyl-3-hydroxypropanoic acid
• CAS: 4370-81-4
• 化学式: C₁₀H₁₂O₃
• 分子量: 180.203
• InChiKey: ISSYFABJJSOCQG-UHFFFAOYSA-N

物化性质

• 熔点：
  98 °C(Solv: benzene (71-43-2))
• 沸点：
  330.8±30.0 °C(Predicted)
• 密度：
  1?+-.0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.1
• 重原子数：
  13
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.3
• 拓扑面积：
  57.5
• 氢给体数：
  2
• 氢受体数：
  3

安全信息

• 海关编码：
  2918199090

反应信息

• 作为反应物：
  描述：

  3-hydroxy-2-methyl-2-phenylpropanoic acid 在 氯化亚砜 作用下， 以 苯 为溶剂， 反应 23.0h， 生成 2-(diethylamino)ethyl 2-methyl-2-phenyl-3-chloropropanoate
  参考文献：
  名称：

  Molecular modification of anticholinergics as probes for muscarinic receptors. 2. Amino esters of .alpha.-methyltropic acid

  摘要：

  As a continuation of our goals to study molecular probes for muscarinic cholinergic receptors, a series of 3-substituted 2-methyl-2-phenylpropanoates with the general structure of C6H5C(CH2X)(CH3)COOCH2CH2NEt2 where X = OH, OTs, F, Cl, Br, I, and OAc were prepared and their antispasmodic activities examined on isolated rat ileum preparations. Structure-activity relationship studies with these compounds provide further evidence suggesting that binding of an aromatic moiety in a specific location within the hydrophobic region of the receptor is important for anticholinergic potency. A nucleophilic displacement of chloride by "naked" fluoride under mild conditions is also reported.

  DOI：

  10.1021/jm00385a028
• 作为产物：
  描述：

  2-苯基-2-(羟甲基)丙酸乙酯 在 sodium hydroxide 作用下， 以76.8%的产率得到3-hydroxy-2-methyl-2-phenylpropanoic acid
  参考文献：
  名称：

  Molecular modification of anticholinergics as probes for muscarinic receptors. 2. Amino esters of .alpha.-methyltropic acid

  摘要：

  As a continuation of our goals to study molecular probes for muscarinic cholinergic receptors, a series of 3-substituted 2-methyl-2-phenylpropanoates with the general structure of C6H5C(CH2X)(CH3)COOCH2CH2NEt2 where X = OH, OTs, F, Cl, Br, I, and OAc were prepared and their antispasmodic activities examined on isolated rat ileum preparations. Structure-activity relationship studies with these compounds provide further evidence suggesting that binding of an aromatic moiety in a specific location within the hydrophobic region of the receptor is important for anticholinergic potency. A nucleophilic displacement of chloride by "naked" fluoride under mild conditions is also reported.

  DOI：

  10.1021/jm00385a028

文献信息

• 14-Membered cyclodepsipeptides with alternating β-hydroxy and α-amino acids by cyclodimerization
  作者：Boyan Iliev、Anthony Linden、Roland Kunz、Heinz Heimgartner

  DOI：10.1016/j.tet.2005.11.002

  日期：2006.2

  cyclodimer 10. In all cases, when starting with racemic material, only the trans-substituted cyclodepsipeptides were isolated. Simple molecular modeling revealed that the formation of the cyclodimer is thermodynamically slightly more favorable than that of the cyclomonomer. The proposal that cyclodimer formation is preferred because of the presence of intramolecular H-bonds could not be confirmed by X-ray

  描述了在“直接酰胺环化”（DAC）条件下1型β-羟基酰胺的环二聚（孪生）。尽管其他偶联方法也可得出中等结果，但通过DAC可获得最佳收率，环二聚体10可达88％。在所有情况下，当从外消旋物质开始时，仅分离出反式取代的环二肽。简单的分子模型表明，环二聚体的形成在热力学上比环聚单体的形成稍微更有利。由于分子内氢键的存在，优选形成环二聚体的提议不能通过X射线晶体学证实。还研究了取代基在氨基酸和羟基酸部分中的影响。结果表明，仅当羟基酸部分被α，α-二取代时，环二聚作用才成功。
• Catalyst composition for hydrogenation and method for hydrogenation using the same
  申请人：Asahi Kasei Chemicals Corporation

  公开号：US10016749B2

  公开（公告）日：2018-07-10

  A catalyst composition for hydrogenation including (A) to (D), in which a mass ratio ((C)/(A)) is 0.1 to 4.0 and a mass ratio ((D)/(A)) is 0.01 to 1.00, (A): a titanocene compound represented by formula (1), (wherein R5 and R6 are any group selected from hydrogen, a hydrocarbon group having 1 to 12 carbon atoms, an aryloxy group, an alkoxy group, a halogen group, and a carbonyl group. R1 and R2 are any group selected from the group consisting of hydrogen and a hydrocarbon group having 1 to 12 carbon atoms, and R1 and R2 are not all hydrogen atoms or all a hydrocarbon group having 1 to 12 carbon atoms), (B): a reductant formed from a compound containing an element selected from the elements Li, Na, K, Mg, Zn, Al, and Ca, (C): an unsaturated compound having a molecular weight of 400 or less, and (D): a polar compound.

  一种用于加氢的催化剂组合物，包括(A)至(D)，其中质量比((C)/(A))为0.1至4.0，质量比((D)/(A))为0.01至1.00， (A)：由公式(1)表示的钛环戊二烯基化合物， （其中R5和R6是从氢、具有1至12个碳原子的烃基、芳氧基、烷氧基、卤素基和羰基中选择的任何基团。R1和R2是从氢和具有1至12个碳原子的烃基组成的组中选择的任何基团，且R1和R2不全是氢原子或全部为具有1至12个碳原子的烃基）， (B)：由含有选自Li、Na、K、Mg、Zn、Al和Ca元素的化合物的还原剂形成， (C)：分子量400或以下的非饱和化合物，以及 (D)：极性化合物。
• Migration du groupe éthoxycarbonyle dans la transposition de<i>Wagner-Meerwein</i>
  作者：Trung Hieu Phan、Hans Dahn

  DOI：10.1002/hlca.19760590137

  日期：——

  Ethoxycarbonyl group migration in the Wagner-Meerwein rearrangement.

  Wagner-Meerwein重排中的乙氧羰基迁移。
• Nickel‐Catalyzed Highly Selective Hydrovinylation of α‐Ketals of Vinylarenes
  作者：Qi Zhang、Shou‐Fei Zhu、Xiang‐Chen Qiao、Li‐Xin Wang、Qi‐Lin Zhou

  DOI：10.1002/adsc.200800158

  日期：2008.7.7

  A nickel-catalyzed hydrovinylation of α-ketal derivatives of vinylarenes has been developed, providing a new method for preparing functional olefins with a quarternary carbon center in high yields and selectivities.

  已经开发了乙烯基催化的乙烯基芳烃的α-缩酮衍生物的镍催化的氢乙烯基化，提供了一种以高收率和高选择性制备具有季碳中心的功能性烯烃的新方法。
• Synthesis of Quaternary Carbon Centers via Hydroformylation
  作者：X. Sun、K. Frimpong、K. L. Tan

  DOI：10.1021/ja1036226

  日期：2010.9.1

  application of hydroformylation to the synthesis of quaternary carbon centers is reported. The synthesis of the highly substituted carbon is achieved by applying a catalytic amount of 1. Ligand 1 serves as a catalytic directing group by covalently and reversibly binding to both the substrate and catalyst. The intramolecular nature of the directing group strategy accelerates the hydroformylation reaction

  报道了加氢甲酰化在合成季碳中心中的应用。高度取代的碳的合成是通过施加催化量的 1 来实现的。配体 1 通过与底物和催化剂共价且可逆地结合作为催化导向基团。导向基团策略的分子内性质加速了加氢甲酰化反应，使得反应在温和的温度（35-55 摄氏度）下进行，并具有出色的区域选择性（b:l > 94:6）。

表征谱图