(S)-3-(p-tolyl)-3,4-dihydro-2H-benzo[b][1,4]oxazine | 1360820-19-4

• 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-(p-tolyl)-3,4-dihydro-2H-benzo[b][1,4]oxazine
• 英文别名: (3S)-3-(4-methylphenyl)-3,4-dihydro-2H-1,4-benzoxazine
• CAS: 1360820-19-4
• 化学式: C₁₅H₁₅NO
• 分子量: 225.29
• InChiKey: LBZGHKVTRNVOHW-CQSZACIVSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.5
• 重原子数：
  17
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.2
• 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-(p-tolyl)-2H-benzo[b][1,4]oxazine 在 bis(1,5-cyclooctadiene)diiridium(I) dichloride 、 [2-(12,14-dioxa-13-phosphapentacyclo[13.8.0.02,11.03,8.018,23]tricosa-1(15),2(11),3,5,7,9,16,18,20,22-decaen-13-yloxy)-3-methoxy-1-phenylpropyl]-diphenylphosphane 、 氢气 作用下， 以 四氢呋喃 为溶剂， 20.0 ℃ 、4.0 MPa 条件下， 反应 20.0h， 以91%的产率得到
  参考文献：
  名称：

  [Ir（P-OP）]-不同取代的含C═N杂环的催化不对称加氢

  摘要：

  对映体纯的膦亚磷酸酯配体（[Ir（Cl）（cod）（P-OP）]）的铱（I）络合物有效催化多种含C═N的杂环化合物（苯并恶嗪，苯并恶嗪酮，苯并噻嗪酮和喹喔啉酮； 25个实例，ee最高可达99％）。底物与催化剂的比例高达2000：1。

  DOI：

  10.1021/ol400854a

文献信息

• Lewis Base Organocatalyzed Enantioselective Hydrosilylation of 1,4-Benzoxazines
  作者：Xiao-Mei Zhang、Yan Jiang、Li-Xin Liu、Wei-Cheng Yuan

  DOI：10.1055/s-0031-1290405

  日期：2012.7

  A chiral Lewis base organocatalyzed enantioselective hydrosilylation of 1,4-benzoxazines is presented. The reactions ­afforded various enantioenriched 3-substituted dihydro-2 H -1,4-benzoxazines with high yields (up to 98%) in moderate enantioselectivities (up to 87% ee).

  提出了一种手性路易斯碱有机催化的 1,4-苯并恶嗪的对映选择性氢化硅烷化。该反应以中等对映选择性（高达 87% ee）的高产率（高达 98%）提供了各种对映体富集的 3-取代二氢-2 H -1,4-苯并恶嗪。
• Cooperative Iron-Brønsted Acid Catalysis: Enantioselective Hydrogenation of Quinoxalines and 2 <i>H</i>-1,4-Benzoxazines
  作者：Steffen Fleischer、Shaolin Zhou、Svenja Werkmeister、Kathrin Junge、Matthias Beller

  DOI：10.1002/chem.201204236

  日期：2013.4.15

  together! A selective Fe‐catalysed enantioselective reduction of quinoxalines and benzoxazines with hydrogen is demonstrated. Key to success is the combination of a chiral Brønsted acid and a well‐defined non‐chiral Fe hydrogenation catalyst. This methodology constitutes an attractive and environmentally favourable alternative to well‐established asymmetric hydrogenations by using precious‐metal‐based catalysts

  一起来！证明了氢能选择性地催化铁催化的喹喔啉和苯并恶嗪的对映选择性还原。成功的关键是手性布朗斯台德酸和定义明确的非手性铁氢化催化剂的结合。通过使用贵金属基催化剂，该方法学是成熟的不对称氢化的一种有吸引力且对环境有利的替代方法。
• 4,5-Dihydropyrrolo[1,2-<i>a</i>]quinoxalines: A Tunable and Regenerable Biomimetic Hydrogen Source
  作者：Zhang-Pei Chen、Mu-Wang Chen、Ran-Ning Guo、Yong-Gui Zhou

  DOI：10.1021/ol500176v

  日期：2014.3.7

  A series of tunable and regenerable biomimetic hydrogen sources, 4,5-dihydropyrrolo[1,2-a]quinoxalines, have been synthesized and applied in biomimetic asymmetric hydrogenation of 3-aryl-2H-benzo[b][1,4]oxazines and 1-alkyl-3-aryl-quinoxalin-2(1H)-ones, providing the chiral amines with up to 92% and 89% ee, respectively.

  合成了一系列可调和可再生的仿生氢源4,5-二氢吡咯并[1,2- a ]喹喔啉，并将其用于3-芳基-2 H-苯并[ b ] [1,4]的仿生不对称加氢。恶嗪和1-烷基-3-芳基-喹喔啉-2（1 H）-酮，分别为手性胺提供高达92％和89％的ee。
• 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。
• 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.