3-chlorocarbonyloxy-estra-1,3,5(10)-trien-17-one

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 类固醇和类固醇衍生物
• 英文名称: 3-chlorocarbonyloxy-estra-1,3,5(10)-trien-17-one
• 英文别名: 3-Chlorcarbonyloxy-oestra-1,3,5(10)-trien-17-on；[(8R,9S,13S,14S)-13-methyl-17-oxo-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-3-yl] carbonochloridate
• 化学式: C₁₉H₂₁ClO₃
• 分子量: 332.827
• InChiKey: DHFXIOPRATVSJC-JEWRLFTDSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.3
• 重原子数：
  23
• 可旋转键数：
  2
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.58
• 拓扑面积：
  43.4
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  3-chlorocarbonyloxy-estra-1,3,5(10)-trien-17-one 在 吡啶 、 偶氮二异丁腈 、 三正丁基氢锡 作用下， 以 四氢呋喃 、 甲苯 、 xylene 、 苯 为溶剂， 反应 0.5h， 生成 雌酚酮
  参考文献：
  名称：

  类固醇和性激素。第262部分：自由基诱导的硒酸酯和硒代碳酸酯的锡烷还原：一种将羧酸降解为正烷烃以及将醇脱氧为烷烃的新方法†

  摘要：

  通过常规方法，由羧酸形成的碳硒烯酸酯与三丁基锡氢化物在惰性芳族溶剂中反应，取决于反应温度和母体羧酸的结构，通过加热生成相应的醛或相应的烷烃，或通过当主要以高产率形成醛时，在环境温度下进行紫外线照射。在α，β-不饱和碳硒烯酸酯的情况下，热反应仅导致相应的醛。

  DOI：

  10.1002/hlca.19800630823
• 作为产物：
  描述：

  三光气 、 雌酚酮 在 吡啶 作用下， 以 甲苯 为溶剂， 生成 3-chlorocarbonyloxy-estra-1,3,5(10)-trien-17-one
  参考文献：
  名称：

  用于选择性分子内 C-H 酰胺化反应的多功能 Cp*Co(III)(LX) 催化剂系统

  摘要：

  在此，我们报告了针对叠氮甲酸酯的分子内 CH 氮烯插入以提供环状氨基甲酸酯的 Cp*Co(III)(LX) 定制钴催化剂系统的开发。钴配合物易于制备且在实验室中稳定，因此提供了方便的反应方案。双齿LX配体的电子调谐显着提高了催化反应性，并且通过构象分析和过渡态的DFT计算使观察到的区域选择性合理化。新开发的钴催化剂体系的优异性能可广泛应用于温和条件下的 C(sp2)-H 和 C(sp3)-H 氨基甲酸化反应。

  DOI：

  10.1021/jacs.0c04448

文献信息

• Catalytic Decarboxylative C−N Formation to Generate Alkyl, Alkenyl, and Aryl Amines
  作者：Yipin Zhang、Xia Ge、Hongjian Lu、Guigen Li

  DOI：10.1002/anie.202010974

  日期：2021.1.25

  bond formation is a reliable method for the synthesis of aryl amines. Catalytic sp3 C−N formation reactions have been reported occasionally, and methods that can realize both sp2 and sp3 C−N formation are relatively unexplored. Herein, we address this challenge with a method of catalytic decarboxylative C−N formation that proceeds through a cascade carboxylic acid activation, acyl azide formation, Curtius

  过渡金属催化的sp 2 C-N键形成是合成芳基胺的可靠方法。偶尔已经报道了催化sp 3 C-N的形成反应，并且相对未开发能够同时实现sp 2和sp 3 C-N形成的方法。在这里，我们通过催化脱羧CN的形成方法来解决这一挑战，该方法通过级联羧酸活化，酰基叠氮化物形成，Curtius重排和亲核加成反应进行。该反应使用天然丰富的有机羧酸作为碳源，容易制备的叠氮基甲酸作为氮源，以及4-二甲基氨基吡啶（DMAP）和Cu（OAc）2作为负载量低至0.1 mol％的催化剂，以气态N 2和CO 2为唯一副产物，可以高收率提供受保护的烷基，烯基和芳基胺。实例展示了天然产物和药物分子的后期功能化，有用的α-手性烷基胺的立体定向合成以及不同尿素和伯胺的快速构建。
• Visible-Light-Induced Intramolecular C(sp²)–H Amination and Aziridination of Azidoformates via a Triplet Nitrene Pathway
  作者：Yipin Zhang、Xunqing Dong、Yanan Wu、Guigen Li、Hongjian Lu

  DOI：10.1021/acs.orglett.8b01980

  日期：2018.8.17

  Catalytic intramolecular C–H amination and aziridination reactions of o-allylphenyl azidoformates have been achieved under visible-light irradiation, providing a mild, clean, and efficient method for the synthesis of useful benzoxazolones and [5.1.0] bicyclic aziridines. Mechanistic studies suggest that a triplet nitrene acts as the reactive intermediate. The chemoselectivity of the reaction, with alkyl

  邻烯丙基苯基叠氮基甲酸酯的催化分子内C–H氨基化和叠氮化反应已在可见光照射下完成，为合成有用的苯并恶唑酮和[5.1.0]双环氮丙啶提供了温和，清洁和有效的方法。机理研究表明，三重态氮烯起反应性中间体的作用。与烷基烯烃叠氮化≫缺电子烯烃叠氮化≈C（sp 2）–H胺化≫ C（sp 3）–H胺化反应的化学选择性，在理解可见光方面可能具有指导意义诱导的三重态氮转化反应。
• Phantoms for Cross-Calibration of Dual Energy X-ray Absorptiometry Measurements in Infants
  作者：Mouhanad Hammami、Jean-Charles Picaud、Christoph Fusch、Elaine M. Hockman、Jacques Rigo、Winston W.K. Koo

  DOI：10.1080/07315724.2002.10719230

  日期：2002.8

  Objective: To test the suitability of phantoms to cross-calibrate body composition measurements in small subjects among different dual energy X-ray absorptiometry (DXA) instruments.Methods: A set of four phantoms with total weights 1520g, 3140g, 4650g and 7490g were made with low cost and easily available materials. Each phantom was made from assembling polyethylene bottles (100 to 1000 mL) filled with either pure olive oil or electrolyte solution in different combinations, and borosilicate tubes (3 and 5 mL) and flexible polypropylene tubing filled with calcium carbonate. Triplicate measurements of each of the four phantoms were performed with three pencil beam densitometers made by the same manufacturer (Hologic Inc., Waltham, MA): two QDR 2000 (University of Liege, Liege, Belgium, and Wayne State University, Detroit, Michigan) and a QDR1500 (University Children's Hospital, Greifswald, Germany) using infant whole body-scanning mode and analyzed with software V5.73P.Results: DXA measured total weight, or bone, lean and fat masses, from one center were highly predictive of DXA measurements from the other centers with an adjusted r(2) of 0.94 to 1.00, p < 0.001. This was the case whether the measurements from single scan or from average of triplicate scans were used in the analysis.Conclusions: Systematic corrections, in the form of linear transformations, are possible to allow comparison of clinical data generated from different centers. Different size phantoms can be made to accommodate the varying range of weights and body composition of study subjects.
• Versatile Cp*Co(III)(LX) Catalyst System for Selective Intramolecular C–H Amidation Reactions
  作者：Jia Lee、Jeonghyo Lee、Hoimin Jung、Dongwook Kim、Juhyeon Park、Sukbok Chang

  DOI：10.1021/jacs.0c04448

  日期：2020.7.15

  Herein, we report the development of a tailored cobalt catalyst system of Cp*Co(III)(LX) toward intramolecular C-H nitrene insertion of azidoformates to afford cyclic carbamates. The cobalt complexes were easy to prepare and bench-stable, thus offering a convenient reaction protocol. The catalytic reactivity was significantly improved by the electronic tuning of the bidentate LX ligands, and the observed

  在此，我们报告了针对叠氮甲酸酯的分子内 CH 氮烯插入以提供环状氨基甲酸酯的 Cp*Co(III)(LX) 定制钴催化剂系统的开发。钴配合物易于制备且在实验室中稳定，因此提供了方便的反应方案。双齿LX配体的电子调谐显着提高了催化反应性，并且通过构象分析和过渡态的DFT计算使观察到的区域选择性合理化。新开发的钴催化剂体系的优异性能可广泛应用于温和条件下的 C(sp2)-H 和 C(sp3)-H 氨基甲酸化反应。
• Steroids and sex hormones. Part 262. The radical induced stannane reduction of selenoesters and selenocarbonates: A new method for the degradation of carboxylic acids to nor-alkanes and for desoxygenation of alcohols to alkanes
  作者：Johannes Pfenninger、Christoph Heuberger、Walter Graf

  DOI：10.1002/hlca.19800630823

  日期：1980.12.10

  Esters of carboselenoic acids, formed from carboxylic acids by conventional methods, undergo reaction with tributyltin hydride in inert aromatic solvents, either by heating to give the corresponding aldehyde or the corresponding alkane depending on reaction temperature and the structure of the parent carboxylic acid, or by ultraviolet irradiation at ambient temperature when the aldehyde is formed predominantly

  通过常规方法，由羧酸形成的碳硒烯酸酯与三丁基锡氢化物在惰性芳族溶剂中反应，取决于反应温度和母体羧酸的结构，通过加热生成相应的醛或相应的烷烃，或通过当主要以高产率形成醛时，在环境温度下进行紫外线照射。在α，β-不饱和碳硒烯酸酯的情况下，热反应仅导致相应的醛。