2-(2,5,5-trimethyl-1,3-dioxan-2-yl)ethylmagnesium bromide | 124732-53-2

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2-(2,5,5-trimethyl-1,3-dioxan-2-yl)ethylmagnesium bromide
• 英文别名: bromo[2-(2,5,5-trimethyl-1,3-dioxan-2-yl)ethyl]magnesium
• CAS: 124732-53-2
• 化学式: C₉H₁₇BrMgO₂
• 分子量: 261.442
• InChiKey: DJFAAAGUMQWSSX-UHFFFAOYSA-M

计算性质

• 辛醇/水分配系数(LogP)：
  2.6
• 重原子数：
  13.0
• 可旋转键数：
  3.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  18.46
• 氢给体数：
  0.0
• 氢受体数：
  2.0

反应信息

• 作为反应物：
  描述：

  2-(2,5,5-trimethyl-1,3-dioxan-2-yl)ethylmagnesium bromide 、 [(4R,5R)-5-ethyl-2,2-dimethyl-1,3-dioxolan-4-yl]methyl trifluoromethanesulfonate 在 copper(I) bromide 作用下， 以 四氢呋喃 、 乙醚 为溶剂， 反应 3.5h， 生成 (4R,5R)-5-ethyl-4-<3-(2,5,5-trimethyl-1,3-dioxan-2-yl)propyl>-2,2-dimethyl-1,3-dioxolane
  参考文献：
  名称：

  A novel carbon-carbon bond-forming reaction of triflates with copper(I)-catalyzed Grignard reagents. A new concise and enantiospecific synthesis of (+)-exo-brevicomin, (5R,6S)-(-)-6-acetoxy-5-hexadecanolide, and L-factor

  摘要：

  DOI：

  10.1021/jo00301a038
• 作为产物：
  描述：

  2-(2-溴乙基)-2,5,5-三甲基-1,3-二噁烷 生成 2-(2,5,5-trimethyl-1,3-dioxan-2-yl)ethylmagnesium bromide
  参考文献：
  名称：

  PAQUETTE, LEO A.;KANG, HO-JUNG, J. AMER. CHEM. SOC., 113,(1991) N, C. 2610-2621

  摘要：

  DOI：

文献信息

• Coupling of chiral 1-bromo-1,2-dienes with zinc-based cuprates: a new procedure for the regio and stereoselective synthesis of functionalized acetylenic compounds
  作者：Anna Maria Caporusso、Sara Filippi、Federica Barontini、Piero Salvadori

  DOI：10.1016/s0040-4039(99)02249-2

  日期：2000.2

  are found to be active in the cross-coupling reaction with allenic bromides affording acetylenic products with a high regio and stereoselective 1,3-anti substitution. The coupling process, which has been successfully extended to functionalized cuprates, can also be performed with alkylzinc chlorides in the presence of catalytic amounts of cuprous salts.

  发现烷基氰基古朴酸锌（Knochel试剂）在与烯丙基溴的交叉偶联反应中具有活性，从而提供具有高区域和立体选择性1,3-抗取代作用的炔属产物。偶联过程已经成功地扩展到官能化的铜酸盐，也可以在催化量的亚铜盐存在下用烷基锌氯化物进行偶联。
• Processes for the preparation of steroid derivatives, intermediates therefor and processes for the preparation of the intermediates
  申请人：Kuraray Co., Ltd.

  公开号：US06310225B1

  公开（公告）日：2001-10-30

  Steroid derivatives useful as intermediates for producing vitamin D derivates as well as processes for producing the steroid derivatives are provided. The steroid derivatives include halide compounds represented by the following formulae: wherein X, R1 and R2 are as defined by the specification.

  提供用作生产维生素D衍生物的中间体的类固醇衍生物，以及生产类固醇衍生物的方法。这些类固醇衍生物包括由以下公式表示的卤化物化合物：其中X、R1和R2如规范中定义。
• A new expeditious synthesis of (+)-exo-brevicomin via efficient CC bond formation of triflates
  作者：Hiyoshizo Kotsuki、Isao Kadota、Masamitsu Ochi

  DOI：10.1016/s0040-4039(00)99305-5

  日期：1989.1

  A new expeditious synthesis of (+)-exo-brevicomin from diethyl D-tartrate as a chiral source is accomplished via an efficient carbon-carbon bond forming reaction of triflates as a key step.

  由D-酒石酸二乙酯作为手性来源的新的快速合成（+）-exo-brevicomin的方法是通过三氟甲磺酸酯的有效碳-碳键形成反应作为关键步骤来完成的。
• PROCESSES FOR THE PREPARATION OF STEROID DERIVATIVES, INTERMEDIATES THEREFOR AND PROCESSES FOR THE PREPARATION OF THE INTERMEDIATES
  申请人：Kuraray Co., Ltd.

  公开号：EP1081157A1

  公开（公告）日：2001-03-07

  Steroid derivatives useful as the intermediate for preparing vitamin D derivatives such as 1α, 25-dihydroxyvitamin D3 and 2β-(3-hydroxypropoxy)-1α, 25-dihydroxyvitamin D3, i.e., halides of general formula (II) (wherein X is bromo or iodo); 1,4,6-trien-3-one compounds of general formula (III) (wherein X is as defined above); 1,3,5,7-tetraene compounds of general formula (IV) (wherein X is as defined above; and R1 is acyl); and 1,5,7-triene compounds of general formula (V) (wherein X is as defined above; and R2 is hydrogen or a hydroxyl-protecting group); and processes for the preparation of the same.

  可用作制备维生素 D 衍生物如 1α，25-二羟基维生素 D3 和 2β-（3-羟基丙氧基）-1α，25-二羟基维生素 D3 的中间体的类固醇衍生物，即通式（II）的卤化物（其中 X 为溴或碘）；通式（III）的 1,4,6-三烯-3-酮化合物（其中 X 如上所定义）；通式（IV）的 1,3,5,7-四烯化合物（其中 X 如上所定义；R1 为酰基）；以及通式（V）的 1,5,7-三烯化合物（其中 X 如上所定义；R2 为氢或羟基保护基）；以及制备上述物质的工艺。
• Cyclic ether derivatives
  申请人：IMPERIAL CHEMICAL INDUSTRIES PLC

  公开号：EP0375457B1

  公开（公告）日：1994-03-16