2-氧代环戊烷羧酸乙酯 | 62937-32-0

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 乙烯基酸
• 中文名称: 2-氧代环戊烷羧酸乙酯
• 英文名称: ethyl 2-oxocyclopentane carboxylate
• 英文别名: 2-Hydroxy-cyclopenten-(1)-carbonsaeure-ethylester；2-oxo-cyclopentanecarboxylic acid ethyl ester；2-hydroxy-cyclopent-1-ene-carboxylic acid ethyl ester；Ethyl 2-hydroxycyclopentene-1-carboxylate
• CAS: 62937-32-0
• 化学式: C₈H₁₂O₃
• 分子量: 156.181
• InChiKey: IZIOZVHSIDPDHX-UHFFFAOYSA-N

物化性质

• 沸点：
  243.1±40.0 °C(Predicted)
• 密度：
  1.209±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.6
• 重原子数：
  11
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.62
• 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：

  2-氧代环戊烷羧酸乙酯 生成 Ethyl 2-oxo-1-[(4-oxo-2-propan-2-ylquinazolin-3-yl)amino]cyclopentane-1-carboxylate
  参考文献：
  名称：

  制备环状α-（3,4-二氢-2-异丙基-4-氧喹唑啉-3-基）氨基-β-酮酸酯：用四乙酸铅在二氯甲烷和甲醇中进一步氧化，导致环扩展和环-分别裂解产品

  摘要：

  通过与3-乙酰氧基氨基喹唑啉酮6反应，分别将环状β-酮酸酯（例如7）和烯醇甲硅烷基醚18分别转化为相应的α-（喹唑啉酮基）氨基（α-Q'NH）衍生物10和19：进一步氧化10和19用四乙酸铅在二氯甲烷中的溶液分别得到扩环产物15和20，但是用甲醇作为溶剂，得到相应的环裂解产物21和22：似乎不涉及自由基中间体。

  DOI：

  10.1016/0040-4039(94)80138-x
• 作为产物：
  描述：

  2-氧代环戊羧酸乙酯 生成 2-氧代环戊烷羧酸乙酯
  参考文献：
  名称：

  Direct observation of .alpha.-oxo ketenes formed from 1,3-dioxin-4-ones and the enols of .beta.-keto esters

  摘要：

  The enol forms of beta-keto esters thermolyze to alcohols and alpha-oxo ketenes, which are characterized by low-temperature IR spectroscopy and on warming regenerate the beta-hydroxy-alpha,beta-unsaturated esters. The matrix isolated s-Z and s-E forms of alpha-oxo ketenes are characterized and photochemically converted into other conformers or sites. Matrix photolysis of 2,2,6-trimethyl-1,3-dioxin-4-one gives the s-Z acetylketene initially. Alpha-Oxo ketenes polymerize in the cold and dimerize only at elevated temperatures.

  DOI：

  10.1021/jo00007a008

文献信息

• N-fluoropyridinium triflate and its derivatives: Useful fluorinating agents
  作者：Teruo Umemoto、Kosuke Kawada、Kyoichi Tomita

  DOI：10.1016/s0040-4039(00)84980-1

  日期：1986.1

  N-Fluoropyridinium triflate and its derivatives, stable and nonhygroscopic crystals, were found to be widely applicable reagents for mild and selective fluorination of a variety of organic compounds.

  N-氟吡啶鎓三氟甲磺酸盐及其衍生物，稳定且不吸湿的晶体，被广泛用作轻度和选择性氟化各种有机化合物的试剂。
• COLD MENTHOL RECEPTOR-1 ANTAGONISTS
  申请人：Colburn Raymond W.

  公开号：US20120053347A1

  公开（公告）日：2012-03-01

  The invention is directed to TRPM8 antagonists of Formula (I). More specifically, the present invention relates to certain novel compounds, methods for preparing compounds, compositions, intermediates and derivatives thereof and methods for treating TRPM8-mediated disorders. Pharmaceutical and veterinary compositions and methods of treating pain and various other disease states or conditions using compounds of the invention are also described.

  这项发明涉及式(I)的TRPM8拮抗剂。更具体地，本发明涉及某些新颖化合物，制备化合物的方法，组合物，中间体及其衍生物，以及治疗TRPM8介导的疾病的方法。还描述了使用本发明化合物治疗疼痛和各种其他疾病状态或病情的药用和兽医组合物及治疗方法。
• FUSED AMINODIHYDROTHIAZINE DERIVATIVES
  申请人：SUZUKI Yuichi

  公开号：US20090209755A1

  公开（公告）日：2009-08-20

  A compound represented by the general formula: or a pharmaceutically acceptable salt thereof or a solvate thereof, wherein Ring A is a C 6-14 aryl group or the like, L is —NR e CO— or the like (wherein R e is a hydrogen atom or the like), Ring B is a C 6-14 aryl group or the like, X is a C 1-3 alkylene group or the like, Y is a single bond or the like, Z is a C 1-3 alkylene group or the like, R 1 and R 2 are each independently a hydrogen atom or the like, and R 3 , R 4 , R 5 and R 6 are independently a hydrogen atom, a halogen atom or the like, has an Aβ production inhibitory effect or a BACE1 inhibitory effect and is useful as a prophylactic or therapeutic agent for a neurodegenerative disease caused by Aβ and typified by Alzheimer-type dementia.

  一个由以下通用公式表示的化合物：或其药用可接受的盐或其溶剂化物，其中环A是C6-14芳基或类似物，L是—NReCO—或类似物（其中Re是氢原子或类似物），环B是C6-14芳基或类似物，X是C1-3烷基烯基或类似物，Y是单键或类似物，Z是C1-3烷基烯基或类似物，R1和R2各自独立地是氢原子或类似物，而R3、R4、R5和R6各自独立地是氢原子、卤原子或类似物，具有Aβ产生抑制作用或BACE1抑制作用，并且可用作由Aβ引起的以阿尔茨海默型痴呆为特征的神经退行性疾病的预防或治疗剂。
• Lewis acid mediated cyclization: synthesis of 2 spirocyclohexylindolines
  作者：Xiang-Kai Kong、Zhi-Min Xiong、Xiang Zhi、Xue-Ling Meng、Jing-Feng Zhao、Wen Chen、Hongbin Zhang

  DOI：10.1039/d1ob00293g

  日期：——

  Herein, we report the synthesis of 2-spirocyclohexylindolines based on a Lewis acid mediated cyclization. This diastereoselective procedure provides the target structures in a straightforward way via dual activation.

  在此，我们报告了基于路易斯酸介导的环化合成 2-螺环己基二氢吲哚。这种非对映选择性过程通过双重激活以直接的方式提供目标结构。
• The Synthesis of Haptens and Properties of Catalytic Antibodies Designed to Catalyse Carbanionic Cyclisation Reactions
  作者：Marion Currie、Colin J. Suckling、Li-min Zhu、June Irvine、William H. Stimson

  DOI：10.1016/0040-4020(95)00500-8

  日期：1995.8

  generate antibodies with the potential to catalyse carbanionic cyclisation reactions is introduced in the context of Dieckmann cyclisations and related reactions. Syntheses of five-membered ring haptens containing a sulphone, to represent the transition state(s) associated with the tetrahedral intermediate, and an amino group, to promote the formation of a general base, are described. Results with partially

  在狄克曼环化和相关反应的背景下，介绍了半抗原的设计，以产生具有催化碳负离子环化反应潜力的抗体。描述了含有砜的五元环半抗原的合成，以代表与四面体中间体相关的过渡态，以及一个氨基基团，以促进一般碱基的形成。报告了部分纯化抗体的结果，表明目标反应可以被抗体催化