(S)-3-(3,4-dichlorophenyl)-3,4-dihydro-2H-benzo[b][1,4]oxazine | 1360820-29-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并恶嗪类
• 英文名称: (S)-3-(3,4-dichlorophenyl)-3,4-dihydro-2H-benzo[b][1,4]oxazine
• 英文别名: (3S)-3-(3,4-dichlorophenyl)-3,4-dihydro-2H-1,4-benzoxazine
• CAS: 1360820-29-6
• 化学式: C₁₄H₁₁Cl₂NO
• 分子量: 280.153
• InChiKey: SHTWQESWFMRDPA-CYBMUJFWSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.4
• 重原子数：
  18
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.14
• 拓扑面积：
  21.3
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  3-(3,4-dichlorophenyl)-2H-1,4-benzoxazine 在 bis(1,5-cyclooctadiene)diiridium(I) dichloride 、 (S)-(-)-SEGphos 、 氢气 、 碘 作用下， 以 苯 为溶剂， 20.0 ℃ 、2.76 MPa 条件下， 反应 15.0h， 以97%的产率得到(S)-3-(3,4-dichlorophenyl)-3,4-dihydro-2H-benzo[b][1,4]oxazine
  参考文献：
  名称：

  3-取代的2 H -1,4-苯并恶嗪的铱催化不对称加氢反应

  摘要：

  使用（环辛二烯）铱氯化二聚物/（S）-SegPhos /碘{[Ir（COD）Cl] 2 /（S）-SegPhos实现对3-芳基2 H -1,4-苯并恶嗪的高度对映选择性氢化/ I 2 }体系作为催化剂，ee最高可达92％。3-styryl-2 H -1,4-苯并恶嗪衍生物还通过铱催化剂和Pd / C在两个连续的步骤中进行氢化，从而获得93-95％ee值。

  DOI：

  10.1002/adsc.201100568

文献信息

• B(C₆F₅)₃-Promoted hydrogenations of N-heterocycles with ammonia borane
  作者：Fangwei Ding、Yiliang Zhang、Rong Zhao、Yanqiu Jiang、Robert Li-Yuan Bao、Kaifeng Lin、Lei Shi

  DOI：10.1039/c7cc04709f

  日期：——

  A transition-metal-free method for the B(C6F5)3-promoted hydrogenations of N-heterocycles using ammonia borane under mild reaction conditions has been developed. The reaction affords a broad range of hydrogenated products in moderate to good yields. The enantioselective versions for the corresponding products were also investigated via our approach, showing good feasibility.

  已开发出一种无过渡金属的方法，该方法使用硼烷氨在温和的反应条件下进行B（C 6 F 5）3促进的N-杂环加氢反应。该反应以中等至良好的产率提供了广泛的氢化产物。还通过我们的方法对相应产品的对映选择性进行了研究，显示出良好的可行性。
• Dihydrophenanthridine: A New and Easily Regenerable NAD(P)H Model for Biomimetic Asymmetric Hydrogenation
  作者：Qing-An Chen、Kai Gao、Ying Duan、Zhi-Shi Ye、Lei Shi、Yan Yang、Yong-Gui Zhou

  DOI：10.1021/ja211684v

  日期：2012.2.1

  A new and easily regenerable NAD(P)H model 9,10-dihydrophenanthridine (DHPD) has been designed for biomimetic asymmetric hydrogenation of imines and aromatic compounds. This reaction features the use of hydrogen gas as terminal reductant for the regeneration of the DHPD under the mild condition. Therefore, the substrate scope is not limited in benzoxazinones; the biomimetic asymmetric hydrogenation of benzoxazines, quinoxafines, and quinolines also gives excellent activities and enantioselectivities. Meanwhile, an unexpected reversal of enantioselectivity was observed between the reactions promoted by the different NAD(P)H models, which is ascribed to the different hydride transfer pathway.
• Iridium-Catalyzed Asymmetric Hydrogenation of 3-Substituted 2H-1,4-Benzoxazines
  作者：Kai Gao、Chang-Bin Yu、Duo-Sheng Wang、Yong-Gui Zhou

  DOI：10.1002/adsc.201100568

  日期：2012.2

  The highly enantioselective hydrogenation of 3-aryl-2H-1,4-benzoxazines was achieved using the (cyclooctadiene)iridium chloride dimer/(S)-SegPhos/iodine [Ir(COD)Cl]2/(S)-SegPhos/I2} system as catalyst with up to 92% ee. The 3-styryl-2H-1,4-benzoxazine derivatives were also hydrogenated by the iridium catalyst and Pd/C in two consecutive steps whereby 93–95% ee values were obtained.

  使用（环辛二烯）铱氯化二聚物/（S）-SegPhos /碘[Ir（COD）Cl] 2 /（S）-SegPhos实现对3-芳基2 H -1,4-苯并恶嗪的高度对映选择性氢化/ I 2 }体系作为催化剂，ee最高可达92％。3-styryl-2 H -1,4-苯并恶嗪衍生物还通过铱催化剂和Pd / C在两个连续的步骤中进行氢化，从而获得93-95％ee值。