N-苄基-2-溴-4-甲基苯胺 | 809231-03-6

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 中文名称: N-苄基-2-溴-4-甲基苯胺
• 英文名称: N-benzyl-2-bromo-4-methylbenzeneamine
• 英文别名: (2-bromo-4-methylphenyl)benzylamine；N-benzyl-2-bromo-4-methylaniline；N-(2-Bromo-4-methylphenyl)benzenemethanamine
• CAS: 809231-03-6
• 化学式: C₁₄H₁₄BrN
• mdl: MFCD02131283
• 分子量: 276.176
• InChiKey: UFDTXDVLBTYCBY-UHFFFAOYSA-N

物化性质

• 沸点：
  363.5±30.0 °C(Predicted)
• 密度：
  1.366±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.5
• 重原子数：
  16
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.142
• 拓扑面积：
  12
• 氢给体数：
  1
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  N-苄基-2-溴-4-甲基苯胺 在 2-双环己基膦-2',6'-二甲氧基联苯 、 dipotassium peroxodisulfate 、 palladium diacetate 、 caesium carbonate 作用下， 以 甲苯 、 乙腈 为溶剂， 反应 16.0h， 生成 1-(3,5-dimethylphenyl)-6-methyl-2-phenyl-1H-benzo[d]imidazole
  参考文献：
  名称：

  Sulfate Radical Anion (SO₄^•–) Mediated C(sp³)–H Nitrogenation/Oxygenation in N-Aryl Benzylic Amines Expanded the Scope for the Synthesis of Benzamidine/Oxazine Heterocycles

  摘要：

  A transition-metal-free, K2S2O8-mediated intra-molecular, oxidative nitrogenation/oxygenation of C(sp(3))-H in N-aryl benzylic amines followed by oxidation at the benzylic center has been developed for the synthesis of benzamidine/benzoxazine heterocycles, providing an expedient access to quinazolin-4(3H)-ones, N-aryl-2-arylbenzimidazoles, and 4H-3,1-benzoxazin-4-ones. A considerable amount of work dealing with the mechanistic study to understand the crucial intramolecular cyclization step largely favors an iminium ion as the key intermediate.

  DOI：

  10.1021/acs.joc.5b01872
• 作为产物：
  描述：

  2-溴-4-甲基苯胺 在 sodium tetrahydroborate 作用下， 以 甲醇 为溶剂， 反应 4.0h， 生成 N-苄基-2-溴-4-甲基苯胺
  参考文献：
  名称：

  Indole Synthesis by Controlled Carbolithiation of o-Aminostyrenes

  摘要：

  An effective synthesis of the functionalized indole ring system has been developed from substituted o-aminostyrene starting material. Our methodology involves a novel cascade reaction sequence of alkyllithium addition to the styrene double bond and subsequent trapping of the intermediate organolithium with a suitable electrophile, followed by an in situ ring closure and dehydration to generate the indole ring. This new reaction sequence allows for the introduction of molecular diversity at all positions on the indole scaffold. The procedure was shown to be successful with a range of both C and N substituents on the o-aminostyrenes. The reaction sequence was tolerant to the reactivity range of alkyllithiums such as tert-, sec-, and n-butyllithium. The electrophiles used were DMF, which generated indole products with C-2 unsubstituted, and nitriles, which incorporated the nitrile substituent at C-2. The o-aminostyrene starting materials were generated by a Pd-catalyzed cross-coupling reaction of a vinyl boronic acid equivalent with the readily available substituted o-bromoanilines.

  DOI：

  10.1021/jo048723e

文献信息

• One-pot strategy of copper-catalyzed synthesis of 1,2-disubstituted benzimidazoles
  作者：Caixia Xie、Xushuang Han、Jian Gong、Danyang Li、Chen Ma

  DOI：10.1039/c7ob00945c

  日期：——

  A simple, one-pot and copper-catalyzed coupling reaction for the construction of 1,2-disubstituted benzimidazole derivatives is described. Low-cost copper salt and weak base K3PO4 were utlized in this reaction. A variety of 1,2-disubstituted benzimidazoles were obtained in moderate to excellent yields.

  描述了一种简单的，一锅法和铜催化的偶联反应，用于构建1,2-二取代的苯并咪唑衍生物。在该反应中使用了廉价的铜盐和弱碱K3PO4。以中等至优异的产率获得了各种1,2-二取代的苯并咪唑。
• Copper-catalyzed intramolecular N-arylation of ureas in water: a novel entry to benzoimidazolones
  作者：Nekane Barbero、Mónica Carril、Raul SanMartin、Esther Domínguez

  DOI：10.1016/j.tet.2008.05.072

  日期：2008.7

  The copper-catalyzed intramolecular N-arylation of 2-bromoarylureas performed in water leading to the benzo[d]imidazolone framework is reported. The scope of the methodology presented herein proved to be broad and afforded a significant number of benzoimidazolones in good to excellent yields. The reported protocol is based on the use of Cut and TMEDA acting both as the ligand and as the base in a water solution, which allows for the easy separation of the catalyst containing aqueous phase from the products by simple extraction. Additionally, the N- versus O-arylation competitive processes are also discussed. (c) 2008 Elsevier Ltd. All rights reserved.
• Rhodium-Catalyzed Domino Conjugate Addition−Cyclization Reactions for the Synthesis of a Variety of <i>N</i>- and <i>O</i>-Heterocycles: Arylboroxines as Effective Carbon Nucleophiles
  作者：Ja Ock Park、So Won Youn

  DOI：10.1021/ol100610v

  日期：2010.5.21

  Facile and efficient Rh(I)-catalyzed domino conjugate addition-cyclization reactions of olefins bearing two electrophilic sites and a pendant nucleophile with organoboroxines have been developed to afford a variety of N- and O-heterocycles, such as 3,4-dihydroquinolin-2(1H)-ones, 3,4-dihydrocoumarins, and pyrrolidin-2-ones, which constitute important motifs in biologically active natural and synthetic organic compounds.
• Synthesis of Pyridobenzazepines Using a One-Pot Rh/Pd-Catalyzed Process
  作者：Heather Lam、Jennifer Tsoung、Mark Lautens

  DOI：10.1021/acs.joc.7b00568

  日期：2017.6.16

  In recent years, our group has been developing Multicatalytic reactions for the synthesis of biologically relevant heterocyclic compounds. An efficient dual-metal catalyzed reaction of electron-deficient o-chlorovinylpyridines with o-aminophenylboronic esters to access pyridobenzazepines is described. Combining a Rh-I-catalyzed arylation followed by a Pd-catalyzed C-N coupling, in a one-pot procedure, provides a simplified method to access heterocycles without workup and purification after each step. The substrate scope encompasses a variety of N-H and N-alkylated pyridobenzazepine variants with yields up to 93%.
• Indole Synthesis by Controlled Carbolithiation of <i>o</i>-Aminostyrenes
  作者：Albane Kessler、Claire M. Coleman、Patchanee Charoenying、Donal F. O'Shea

  DOI：10.1021/jo048723e

  日期：2004.11.1

  An effective synthesis of the functionalized indole ring system has been developed from substituted o-aminostyrene starting material. Our methodology involves a novel cascade reaction sequence of alkyllithium addition to the styrene double bond and subsequent trapping of the intermediate organolithium with a suitable electrophile, followed by an in situ ring closure and dehydration to generate the indole ring. This new reaction sequence allows for the introduction of molecular diversity at all positions on the indole scaffold. The procedure was shown to be successful with a range of both C and N substituents on the o-aminostyrenes. The reaction sequence was tolerant to the reactivity range of alkyllithiums such as tert-, sec-, and n-butyllithium. The electrophiles used were DMF, which generated indole products with C-2 unsubstituted, and nitriles, which incorporated the nitrile substituent at C-2. The o-aminostyrene starting materials were generated by a Pd-catalyzed cross-coupling reaction of a vinyl boronic acid equivalent with the readily available substituted o-bromoanilines.