(R)-5-(bromomethyl)-5-(4-chlorophenyl)dihydrofuran-2(3H)-one

• 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: (R)-5-(bromomethyl)-5-(4-chlorophenyl)dihydrofuran-2(3H)-one
• 英文别名: (5R)-5-(bromomethyl)-5-(4-chlorophenyl)oxolan-2-one
• 化学式: C₁₁H₁₀BrClO₂
• 分子量: 289.556
• InChiKey: DKFWFJIRYKQMOL-NSHDSACASA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 重原子数：
  15
• 可旋转键数：
  2
• 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：

  4-(4-chlorophenyl)pent-4-enoic acid 在 N-溴代丁二酰亚胺(NBS) 、 O-[(S)-[(2R,4S,5R)-5-ethenyl-1-azabicyclo[2.2.2]octan-2-yl]-quinolin-4-ylmethyl] N-(2,4-dimethoxyphenyl)carbamothioate 、 4-硝基苯磺酰胺 作用下， 以 氯仿 、 甲苯 为溶剂， 反应 40.0h， 以88%的产率得到(R)-5-(bromomethyl)-5-(4-chlorophenyl)dihydrofuran-2(3H)-one
  参考文献：
  名称：

  Asymmetric Bromolactonization Using Amino-thiocarbamate Catalyst

  摘要：

  A novel amino-thiocarbamate-catalyzed bromolactonization of unsaturated carboxylic acids has been developed. The scope of the reaction is evidenced by 22 examples of gamma-lactones with up to 99% yield and 93% ee. The protocol was applied in the enantioselective synthesis of the key intermediates of VLA-4 antagonists.

  DOI：

  10.1021/ja1048972

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。
• Enantioselective Organocatalyzed Bromolactonizations: Applications in Natural Product Synthesis
  作者：Marius Aursnes、Jørn E. Tungen、Trond V. Hansen

  DOI：10.1021/acs.joc.6b01375

  日期：2016.9.16

  The best catalyst enabled the cyclization of several 5-arylhex-5-enoic acids into the corresponding bromolactones with up to 96% ee and in high to excellent chemical yields. The reported catalysts are prepared in a straightforward manner in two steps from dimethyl squarate. The utility of the developed protocol was demonstrated in highly enantioselective syntheses of the sesquiterpenoids (−)-gossoronol

  在10种手性方酰胺氢键键合有机催化剂的存在下，对δ-不饱和羧酸的不对称溴化反应进行了研究。最好的催化剂可以使几种5-芳基己基-5-烯酸环化成相应的溴内酯，其ee最高可达96％，化学产率高至优异。所报道的催化剂是由直方的，由二甲基二甲酸酯分两步制备的。倍半萜类（-）-棉酚和（-）-boivinianin B的高度对映体选择性合成证明了开发方案的实用性。两种天然产物均以≥99％的对映体过量获得。
• A Catalyst-Controlled Enantiodivergent Bromolactonization
  作者：Yuk-Cheung Chan、Xinyan Wang、Ying-Pong Lam、Jonathan Wong、Ying-Lung Steve Tse、Ying-Yeung Yeung

  DOI：10.1021/jacs.1c05680

  日期：2021.8.18

  enantiodivergent bromolactonization of olefinic acids has been developed. Quinine-derived amino-amides bearing the same chiral core but different achiral aryl substituents were used as the catalysts. Switching the methoxy substituent in the aryl amide system from meta- to ortho-position results in a complete switch in asymmetric induction to afford the desired lactone in good enantioselectivity and yield

  已开发出烯烃酸的催化剂控制的对映发散溴内酯化。使用具有相同手性核心但不同非手性芳基取代基的奎宁衍生的氨基酰胺作为催化剂。将芳基酰胺系统中的甲氧基取代基从间位切换到邻位导致不对称诱导的完全切换，以良好的对映选择性和产率提供所需的内酯。包括化学实验和密度泛函理论计算在内的机理研究表明，催化剂取代基的空间和电子效应的差异会改变反应机制。
• Catalytic enantioselective bromolactonization of alkenoic acids in the presence of palladium complexes
  作者：Hyun Joo Lee、Dae Young Kim

  DOI：10.1016/j.tetlet.2012.10.051

  日期：2012.12

  The catalytic enantioselective bromolactonization of alkenoic acids promoted by chiral palladium complexes has been developed, allowing facile synthesis of the corresponding γ-lactones with excellent enantioselectivity (up to 97% ee). The method reported represents a practical entry for the preparation of chiral γ-lactone derivatives.

  已经开发了由手性钯配合物促进的链烯酸的催化对映选择性溴内酯化，可以轻松合成具有良好对映选择性（最高97％ee）的相应γ-内酯。报道的方法代表了制备手性γ-内酯衍生物的实用入口。