2-cyclohexyl-2-phenyloxirane | 144313-98-4

• 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: 2-cyclohexyl-2-phenyloxirane
• CAS: 144313-98-4
• 化学式: C₁₄H₁₈O
• 分子量: 202.296
• InChiKey: UZFQXCPNHZPIHI-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.6
• 重原子数：
  15
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.57
• 拓扑面积：
  12.5
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  2-cyclohexyl-2-phenyloxirane 在 频那醇硼烷 、 magnesium triflimide 作用下， 以 四氢呋喃 为溶剂， 反应 24.0h， 以87%的产率得到2-cyclohexyl-2-phenylethanol
  参考文献：
  名称：

  通过选择性 CO 键活化环氧化物的区域发散性硼氢化环开环

  摘要：

  提出了镁催化的区域发散 C-O 键裂解方案。容易获得的镁催化剂实现了多种环氧化物和氧杂环丁烷的选择性硼氢化反应，以优异的产率和区域选择性得到仲醇和叔醇。实验机理研究和 DFT 计算提供了对意外区域发散的洞察，并解释了 C-O 键活化和产物形成的不同机制。

  DOI：

  10.1021/jacs.0c05917
• 作为产物：
  描述：

  1-环己基-1-苯基-乙烯 在 间氯过氧苯甲酸 作用下， 以 二氯甲烷 为溶剂， 以43%的产率得到2-cyclohexyl-2-phenyloxirane
  参考文献：
  名称：

  Isomerization of Terminal Epoxides by a [Pd–H] Catalyst: A Combined Experimental and Theoretical Mechanistic Study

  摘要：

  An unusual palladium hydride complex has been shown to be a competent catalyst in the isomerization of a variety of terminal and internal epoxides. The reaction displayed broad scope and synthetic utility. Experimental and theoretical evidence are provided for an unprecedented hydride mechanism characterized by two distinct enantio-determining steps. These results hold promise for the development of an enantioselective variant of the reaction.

  DOI：

  10.1021/ja400325w

文献信息

• 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。
• An air-stable cationic iridium hydride as a highly active and general catalyst for the isomerization of terminal epoxides
  作者：Nicolas Humbert、Devendra J. Vyas、Céline Besnard、Clément Mazet

  DOI：10.1039/c4cc05260a

  日期：——

  We describe the use of an air-stable iridium hydride catalyst for the isomerization of terminal epoxides into aldehydes with perfect regioselectivity.

  我们描述了使用一种空气稳定的铱氢化物催化剂将末端环氧化物异构化为具有完美区域选择性的醛的方法。
• Complementary Catalytic Strategies to Access ?-Chiral Aldehydes
  作者：Clément Mazet

  DOI：10.2533/chimia.2013.658

  日期：——

  The present article summarizes the development of two novel and complementary catalytic methods to access ?-chiral aldehydes. A C1-symmetric chiral (P,N) ligand with a structure derived from the ubiquitous binepine scaffold has been specifically designed for the Pd-catalyzed ?-arylation of aldehydes to access indane derivatives with a well-defined quaternary stereocenter in high yields and excellent enantioselectivities. In addition, a dinuclear palladium hydride catalyst has been synthesized for the isomerization of terminal and trisubstituted epoxides into aldehydes and ketones respectively. Combined experimental and theoretical investigations pointed to an unprecedented 'epoxide-opening/hydride-transfer' sequence. The mechanism also features two distinct enantio-determining steps in the kinetic resolution of racemic epoxides.

  本文总结了两种新颖且互补的催化方法的发展，用于获取α-手性醛类化合物。一种源自广泛存在的bipine桥架的C1对称手性（P,N）配体已经专门设计用于Pd催化的α-芳基化反应，以获得具有明确定义的四元手性中心的茚烷衍生物，产率高且选择性优异。此外，合成了一种双核钯氢化物催化剂，用于将末端和三取代环氧化物异构化为相应的醛和酮。结合实验和理论研究指出了一种前所未有的“环氧化物开环/氢转移”序列。该机制还包括在消旋环氧化物的动力学拆分过程中的两个不同的手性决定步骤。
• Agents for the Treatment of Overactive Detrusor. III. Synthesis and Structure-Activity Relationships of N-(4-Amino-2-butynyl)acetamide Derivatives.
  作者：Kazuhiko TAKE、Kazuo OKUMURA、Kazunori TSUBAKI、Takao TERAI、Youichi SHIOKAWA

  DOI：10.1248/cpb.40.1415

  日期：——

  A series of N-(4-amino-2-butynyl)acetamides were synthesized and examined for their inhibitory activity on detrusor contraction and mydriatic activity as an index of anticholinergic side effect. Among those compounds synthesized, (+)-2-cyclohexyl-N-(4-dimethylamino-2-butynyl)-2-hydroxy-2-phenylacetamide hydrochloride ((+)-13b·HCl), 2-cyclohexyl-2-hydroxy-N-(4-methylamino-2-butynyl)-2-phenylacetamide hydrochloride (13c·HCl), N-(4-dimethylamino-2-butynyl)-2, 2-diphenyl-2-hydroxyacetamide hydrochloride (14a·HCl), and 2, 2-diphenyl-N-(4-ethylamino-2-butynyl)-2-hydroxyacetamide hydrochloride (14b·HCl) showed equipotent inhibitory activity on detrusor contraction to oxybutynin (1) and less mydriatic activity. Further evaluation of these compounds as an agent for the treatment of overactive detrusor has been examined.

  合成了一系列N-(4-氨基-2-丁炔基)乙酰酰胺，并检测了其对逼尿肌收缩的抑制活性以及作为抗胆碱能副作用指标的散瞳活性。在合成的化合物中，(+)-2-环己基-N-(4-二甲氨基-2-丁炔基)-2-羟基-2-苯基乙酰酰胺盐酸盐((+)-13b·HCl)、2-环己基-2-羟基-N-(4-甲氨基-2-丁炔基)-2-苯基乙酰酰胺盐酸盐(13c·HCl)、N-(4-二甲氨基-2-丁炔基)-2,2-二苯基-2-羟基乙酰酰胺盐酸盐(14a·HCl)和2,2-二苯基-N-(4-乙氨基-2-丁炔基)-2-羟基乙酰酰胺盐酸盐(14b·HCl)在抑制逼尿肌收缩方面表现出与氧丁嗪(1)相当的活性，并且散瞳活性较低。进一步评估这些化合物作为治疗膀胱过度活动的药物的潜力。
• Novel Potent Muscarinic Receptor Antagonists: Investigation on the Nature of Lipophilic Substituents in the 5- and/or 6-Positions of the 1,4-Dioxane Nucleus
  作者：Fabio Del Bello、Alessandro Bonifazi、Gianfabio Giorgioni、Alessandro Piergentili、Maria Giovanna Sabbieti、Dimitrios Agas、Marzia Dell’Aera、Rosanna Matucci、Marcin Górecki、Gennaro Pescitelli、Giulio Vistoli、Wilma Quaglia

  DOI：10.1021/acs.jmedchem.9b02100

  日期：2020.6.11

  A series of novel 1,4-dioxane analogues of the muscarinic acetylcholine receptor (mAChR) antagonist 2 was synthesized and studied for their affinity at M1–M5 mAChRs. The 6-cyclohexyl-6-phenyl derivative 3b, with a cis configuration between the CH2N+(CH3)3 chain in the 2-position and the cyclohexyl moiety in the 6-position, showed pKi values for mAChRs higher than those of 2 and a selectivity profile

  合成了毒蕈碱乙酰胆碱受体（mAChR）拮抗剂2的一系列新型1,4-二恶烷类似物，并研究了它们在M 1 –M 5 mAChRs上的亲和力。在2位的CH 2 N +（CH 3）3链与6位的环己基部分之间具有顺式构型的6-环己基-6-苯基衍生物3b显示出较高的mAChRs p K i值比2的选择性要好，并且选择性分布类似于临床批准的奥昔布宁药物。3b对映体的研究相应的叔胺33b表明，这些丁香体分别为（2 S，6 S）-（-）- 3b和（2 S，6 S）-（-）- 33b。在M 3 mAChR解析的结构上的对接模拟使实验观察合理化。季铵盐功能可防止血脑屏障的穿越，而较高的M 3 / M 2选择性可能会限制心血管副作用，因此3b成为设计可用于外周血的新型拮抗剂的有价值的起点M 3的疾病 受体参与。