4-azidochroman | 676133-62-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并吡喃
• 英文名称: 4-azidochroman
• 英文别名: 4-azido-3,4-dihydro-2H-chromene
• CAS: 676133-62-3
• 化学式: C₉H₉N₃O
• 分子量: 175.19
• InChiKey: OJPGJCQFJXHHNO-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 重原子数：
  13
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  23.6
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  4-azidochroman 在 三苯基膦 、 水 、 盐酸 、 sodium hydroxide 作用下， 以 四氢呋喃 为溶剂， 反应 0.5h， 生成 3,4-二氢-2H-苯并吡喃-4-胺
  参考文献：
  名称：

  [EN] 2-AMINO- AND 2-THIO-SUBSTITUTED 1,3-DIAMINOPROPANES
  [FR] 1,3-DIAMINOPROPANES A SUBSTITUTION 2-AMINO- ET 2-THIO-

  摘要：

  公开号：

  WO2005095326A3
• 作为产物：
  描述：

  3,4-二氢-1H-苯并吡喃 在 叠氮基三甲基硅烷 、 copper diacetate 、 2,2′-双[(4S)-4-苄基-2-噁唑啉] 、 N-氟代双苯磺酰胺 作用下， 以 硝基甲烷 为溶剂， 反应 24.0h， 以60%的产率得到4-azidochroman
  参考文献：
  名称：

  Site-Selective Copper-Catalyzed Azidation of Benzylic C–H Bonds

  摘要：

  Site selectivity represents a key challenge for non-directed C-H functionalization, even when the C-H bond is intrinsically reactive. Here, we report a copper-catalyzed method for benzylic C-H azidation of diverse molecules. Experimental and density functional theory studies suggest the benzyl radical reacts with a Cu-II-azide species via a radical-polar crossover pathway. Comparison of this method with other C-H azidation methods highlights its unique site selectivity, and conversions of the benzyl azide products into amine, triazole, tetrazole, and pyrrole functional groups highlight the broad utility of this method for target molecule synthesis and medicinal chemistry.

  DOI：

  10.1021/jacs.0c05362

文献信息

• Kinetic Resolution of Cyclic Secondary Azides, Using an Enantioselective Copper-Catalyzed Azide–Alkyne Cycloaddition
  作者：Juliana R. Alexander、Amy A. Ott、En-Chih Liu、Joseph J. Topczewski

  DOI：10.1021/acs.orglett.9b01556

  日期：2019.6.7

  An enantioselective copper-catalyzed azide–alkyne cycloaddition (E-CuAAC) is reported by kinetic resolution. Chiral triazoles were isolated in high yield with limiting alkyne (up to 97:3 enantiomeric ratio (er)). A range of substrates were tolerated (>30 examples), and the reaction was scaled to >1 g. The er of a triazole product could be enhanced by recrystallization and the recovered scalemic azide

  通过动力学拆分报道了对映选择性铜催化的叠氮化物-炔烃环加成反应（E-CuAAC）。以受限的炔烃（高达97：3对映体比率（er））高收率分离手性三唑。容许一定范围的底物（> 30个实施例），并且反应按比例缩放至> 1g。通过重结晶可以提高三唑产物的er值，并且可以将外消旋的叠氮化物外消旋和再循环。再循环叠氮化物允许有效使用不需要的叠氮化物对映异构体。
• METHOD FOR PREPARING ENAMIDE COMPOUND AND RUTHENIUM COMPLEX CATALYST USED THEREIN
  申请人：POSTECH ACADEMY-INDUSTRY FOUNDATION

  公开号：US20170291885A1

  公开（公告）日：2017-10-12

  Provided is a method for preparing an enamide compound, which includes reacting an organic azide compound having α-hydrogen and an anhydride by addition of a ruthenium complex catalyst in the presence of an ionic liquid, and a ruthenium complex catalyst used herein.

  提供了一种制备烯酰胺化合物的方法，包括在存在离子液体的情况下，通过向具有α-氢的有机叠氮化合物和酸酐添加钌配合物催化剂来反应，并且这里使用的是一种钌配合物催化剂。
• Synthesis of Enamides by Ruthenium-Catalyzed Reaction of Alkyl Azides with Acid Anhydrides in Ionic Liquid
  作者：Han Kyu Pak、Junghoon Han、Mina Jeon、Yongjin Kim、Yearang Kwon、Jin Yong Park、Young Ho Rhee、Jaiwook Park

  DOI：10.1002/cctc.201500935

  日期：2015.12

  Enamides were synthesized by a ruthenium‐catalyzed one‐pot, one‐step procedure from alkyl azides and acid anhydrides. The substrate scope includes not only secondary azides, but also primary aliphatic ones to give a wide range of enamides containing various functional groups. This one‐step procedure was based on the newly discovered activity of Severin's diruthenium complex ([Cp^RuCl2]2: Cp^=η5‐1‐methoxy‐2

  通过钌催化的一步法，一步法由烷基叠氮化物和酸酐合成酰胺。底物的范围不仅包括仲叠氮化物，而且还包括伯脂族伯酸，以得到各种包含各种官能团的酰胺。这种一步程序是基于塞韦林的二钌复合物（混合[Cp ^的RuCl的新发现的活性2 ] 2：的Cp ^ =η 5 -1-甲氧基-2,4-二-叔-丁基-3-新戊基环戊二烯基），用于将烷基叠氮化物转化为离子液体中相应的NH亚胺中间体。在Severin配合物与叠氮化物的化学计量反应中观察到钌四烯配合物的形成，烷基化叠氮化物充当了NH亚胺中间体的形成催化剂。
• Exploiting the Nucleophilicity of NH Imines: Synthesis of Enamides from Alkyl Azides and Acid Anhydrides
  作者：Junghoon Han、Mina Jeon、Han Kyu Pak、Young Ho Rhee、Jaiwook Park

  DOI：10.1002/adsc.201400584

  日期：2014.9.15

  The nucleophilicity of N‐unsubstituted imines, which were generated from alkyl azides by a ruthenium‐catalyzed reaction, was investigated in the reaction with acid anhydrides. The initial products were N‐acylimines, which isomerized to the corresponding enamides. Heating or triethylamine facilitated the isomerization of N‐acylimines that are stable at room temperature. A wide range of acyclic and cyclic

  在与酸酐的反应中，研究了由烷基叠氮化物通过钌催化反应生成的N-未取代亚胺的亲核性。最初的产物是N-酰亚胺，其异构化为相应的酰胺。加热或三乙胺促进了在室温下稳定的N-酰亚胺的异构化。在温和条件下成功合成了各种含各种官能团的无环和环状酰胺。除乙酸酐外，还可使用各种酸酐。从与环状酸酐的反应中，获得含有羧酸基的酰胺。
• 유기 아자이드 및 아실 주개로부터 엔아마이드를 제조하는 방법
  申请人：POSTECH Research and Business Development Foundation 포항공과대학교 산학협력단(220040433361) BRN ▼506-82-07303

  公开号：KR20160059189A

  公开（公告）日：2016-05-26

  본 발명은 유기 아자이드 화합물로부터 질소에 치환기가 없는 이민을 발생시키고, 그와 아실 주개와의 반응을 통해 엔아마이드 화합물을 합성하는 방법에 관한 것이다. 본 발명의 제조 방법을 이용하면, 적절한 촉매를 사용하여 알파 수소를 가진 유기 아자이드로부터 연속한 질소 제거 및 1,2-수소 옮김 반응을 통해 질소에 치환기가 없는 이민을 생성하고, 이 이민과 아실 주개를 반응시켜 엔아마이드 화합물을 합성할 수 있다.

  本发明涉及一种从有机酰胺化合物中引发无氮取代基的迁移，并通过其与酰基试剂的反应合成恩酰胺化合物的方法。利用本发明的制备方法，可以使用适当的催化剂，通过连续氮脱除和1,2-氢迁移反应从具有α-氢的有机酰胺生成无氮取代基的迁移，然后将该迁移与酰基试剂反应来合成恩酰胺化合物。