3-(bromomethyl)-4,5-dihydrobenzo[c]oxepin-1(3H)-one

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并噁庚英
• 英文名称: 3-(bromomethyl)-4,5-dihydrobenzo[c]oxepin-1(3H)-one
• 英文别名: 3-bromomethyl-4,5-dihydro-(3H)-benzo[c]oxepin-1-one；3-(bromomethyl)-4,5-dihydro-3H-2-benzoxepin-1-one
• 化学式: C₁₁H₁₁BrO₂
• 分子量: 255.111
• InChiKey: MAKIXCDMTBFQAR-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3
• 重原子数：
  14
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.36
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  对甲苯甲酸 在 4-二甲氨基吡啶 、 正丁基锂 、 bis(4-methoxyphenyl)selenide 作用下， 以 四氢呋喃 、 正己烷 、 氯仿 为溶剂， 反应 18.25h， 生成 3-(bromomethyl)-4,5-dihydrobenzo[c]oxepin-1(3H)-one
  参考文献：
  名称：

  有机硒和DMAP共催化：从未活化的烯烃区域选择性合成中等大小的内酯和溴氧杂环丁烷

  摘要：

  已经开发了由双（4-甲氧基苯基）硒化物和4-（二甲基氨基）吡啶（DMAP）组成的催化体系，用于区域选择性合成具有高跨环应变的中型溴/碘内酯和溴氧杂环丁烷。77Se NMR，质谱...

  DOI：

  10.1039/c5cc10245f

文献信息

• Synthesis of Novel C 2-Symmetric Sulfur-Based Catalysts: Asymmetric Formation of Halo- and Seleno-Functionalized Normal- and Medium-Sized Rings
  作者：Sadhan Jana、Ajay Verma、Vandana Rathore、Sangit Kumar

  DOI：10.1055/s-0037-1610715

  日期：2019.9

  The synthesis of novel, highly functionalized, C 2-symmetric sulfur-based catalysts is developed and their catalytic applications are explored in asymmetric bromo-, iodo- and seleno-functionalizations of alkenoic acids. This protocol provides the corresponding normal- and medium-sized bromo, iodo and selenolactones in up to 98% yield and 83% stereoselectivity.

  开发了新型、高度官能化的 C 2 对称硫基催化剂的合成，并探索了它们在烯酸的不对称溴、碘和硒官能化中的催化应用。该方案以高达 98% 的产率和 83% 的立体选择性提供相应的正常和中等大小的溴、碘和硒内酯。
• Evaluation of <i>e</i><i>xo</i>-<i>e</i><i>ndo</i> Ratios in the Halolactonization of ω-Unsaturated Acids
  作者：Marie-Claude Roux、Renée Paugam、Gérard Rousseau

  DOI：10.1021/jo0017234

  日期：2001.6.1

  competition between electronic and steric effects. These latter were developed by transannular interactions (for the acid chain lengths 8-11) and/or the conformations adopted by the chains (for the acid chain lengths > or = 14,) which disfavored the formation of the exo lactones. The larger proportion of endo lactones observed with the bromo reagent compared to the iodo reagent seemed due to electronic factors

  考察了2-（ω-烯基）苯甲酸与双（可力丁）碘和双（可力丁）溴六氟磷酸盐的反应。除了仅获得外泌内酯的2-丁-3-烯基苯甲酸外，对于其他酸，总是得到外泌内酯的混合物。内酯的比例对于11个碳原子的酸链长度（形成12元环内酯）和高于14个碳原子的酸链长度都很重要。在分子计算的基础上，通过电子和空间效应之间的竞争解释了内酯的形成。后者是通过跨环相互作用（对于酸链长度为8-11）和/或由链采用的构象（对于酸链长度>或= 14）形成的，这不利于外泌内酯的形成。
• Efficient Medium Ring Size Bromolactonization Using a Sulfur-Based Zwitterionic Organocatalyst
  作者：Yi An Cheng、Tao Chen、Chong Kiat Tan、Jun Jie Heng、Ying-Yeung Yeung

  DOI：10.1021/ja307210n

  日期：2012.10.10

  Catalytic bromolactonization of long-chain olefinic acids resulting in the efficient synthesis of medium-sized lactones is reported using a zwitterionic catalyst and stoichiometric N-bromosuccinimide halogen source. The reaction was found to be more efficient at 0 degrees C than at room temperature, which could be attributed to the temperature dependence of the zwitterionic catalyst.
• Organoselenium and DMAP co-catalysis: regioselective synthesis of medium-sized halolactones and bromooxepanes from unactivated alkenes
  作者：Ajay Verma、Sadhan Jana、Ch. Durga Prasad、Abhimanyu Yadav、Sangit Kumar

  DOI：10.1039/c5cc10245f

  日期：——

  A catalytic system consisting of bis(4-methoxyphenyl)selenide and 4-(dimethylamino)pyridine (DMAP) has been developed for the regioselective synthesis of medium-sized bromo/iodo lactones and bromooxepanes possessing high transannular strain. 77Se NMR, mass spectrometry...

  已经开发了由双（4-甲氧基苯基）硒化物和4-（二甲基氨基）吡啶（DMAP）组成的催化体系，用于区域选择性合成具有高跨环应变的中型溴/碘内酯和溴氧杂环丁烷。77Se NMR，质谱...