1-苄基-5-甲基-1,3-二氢-2H-苯并咪唑-2-酮 | 28643-35-8

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并咪唑类
• 中文名称: 1-苄基-5-甲基-1,3-二氢-2H-苯并咪唑-2-酮
• 英文名称: 1-benzyl-5-methyl-1,3-dihydro-2H-benzo[d]imidazol-2-one
• 英文别名: 1-benzyl-5-methyl-1,3-dihydrobenzoimidazol-2-one；1-benzyl-5-methyl-1H-benzo[d]imidazol-2(3H)-one；1-benzyl-5-methyl-1,3-dihydro-benzoimidazol-2-one；1-Benzyl-5-methylbenzimidazolin-2-on；5-Methyl-1-benzylbenzimidazolin-2-on；3-benzyl-6-methyl-1H-benzimidazol-2-one
• CAS: 28643-35-8
• 化学式: C₁₅H₁₄N₂O
• 分子量: 238.289
• InChiKey: FXNWUIXHJMTWAV-UHFFFAOYSA-N

物化性质

• 熔点：
  170-172 °C(Solv: hexane (110-54-3))
• 密度：
  1.211±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.6
• 重原子数：
  18
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.13
• 拓扑面积：
  32.3
• 氢给体数：
  1
• 氢受体数：
  1

安全信息

• 海关编码：
  2933990090

反应信息

• 作为反应物：
  描述：

  1-苄基-5-甲基-1,3-二氢-2H-苯并咪唑-2-酮 在 盐酸 、 三氯氧磷 作用下， 反应 3.0h， 生成 1-苄基-2-氯-5-甲基苯并咪唑
  参考文献：
  名称：

  新的2-哌嗪基苯并咪唑衍生物作为5-HT3拮抗剂。合成和药理评价。

  摘要：

  制备了一系列2-哌嗪基苯并咪唑衍生物，并将其评价为5-HT 3受体拮抗剂。通过放射性配体结合测定法评估了它们的5-HT3受体亲和力，并确定了它们在麻醉大鼠中抑制5-HT诱导的Bezold-Jarisch反射的能力。化合物7e（lerisetron，pKi = 9.2）对5-HT3受体的亲和力高于tropisetron和granisetron，而化合物7q（pKi = 7.5）对该受体的亲和力很低，表明苯并咪唑的N1原子被取代环对于亲和力和活性至关重要。还讨论了不同位置的多个取代基对苯并咪唑芳环的取代作用。建立了所研究化合物的5-HT3拮抗活性与芳香环上取代位置的强相关性。因此，尽管4-甲氧基衍生物7m显示出对5-HT 3受体的弱亲和力（pKi ＝ 6.7），但是7-甲氧基衍生物7n显示出最高的亲和力（pKi ＝ 9.4）。化合物7e和7n作为癌症化疗和放疗引起的恶心和呕吐的治疗药物，目前正在进一步研究中。

  DOI：

  10.1021/jm960442e
• 作为产物：
  描述：

  1-benzyl-1-(2-bromo-4-methylphenyl)urea 在 copper(l) iodide 、 四甲基乙二胺 作用下， 以 水 为溶剂， 反应 15.0h， 以80%的产率得到1-苄基-5-甲基-1,3-二氢-2H-苯并咪唑-2-酮
  参考文献：
  名称：

  Copper-catalyzed intramolecular N-arylation of ureas in water: a novel entry to benzoimidazolones

  摘要：

  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.

  DOI：

  10.1016/j.tet.2008.05.072

文献信息

• Novel Benzo[d]imidazole-2(3H)-thiones as Potent Inhibitors of the .ALPHA.-Melanocyte Stimulating Hormone Induced Melanogenesis in Melanoma B16 Cells
  作者：Jee-Hyun Lee、Pillaiyar Thanigaimalai、Ki-Cheul Lee、Seong-Cheol Bang、Min-Seok Kim、Vinay Kumar Sharma、Cheong-Yong Yun、Eunmiri Roh、Youngsoo Kim、Sang-Hun Jung

  DOI：10.1248/cpb.58.918

  日期：——

  In order to determine the optimum size of heterocycle of lead compound 1 (6-methyl-3-phenethyl-3,4-dihydro-1H-quinoline-2-thione; IC50=0.8 μM) for inhibition of melanogenesis, we have synthesized and evaluated some benzimdazole-2(3H)-thiones 5a—e. The preliminary bioassay has shown that the benzimdazole-2(3H)-thione motif of 5 is essential structural unit for their inhibitory activity. Among all thiones 5a—e, the compound 5d strongly inhibited the formation of melanin with IC50 value of 1.3 μM.

  为了确定先导化合物1（6-甲基-3-苯乙基-3,4-二氢-1H-喹啉-2-硫酮；IC50=0.8 μM）抑制黑色素生成的最佳杂环大小，我们合成并评估了一些苯基咪唑-2(3H)-硫酮5a—e。初步生物检测结果表明，化合物5的苯基咪唑-2(3H)-硫酮构型是其抑制活性的必要结构单元。在所有硫酮5a—e中，化合物5d对黑色素的生成具有强烈抑制作用，其IC50值为1.3 μM。
• Regioselective Synthesis of Benzimidazolones via Cascade C–N Coupling of Monosubstituted Ureas
  作者：Johannes B. Ernst、Nicholas E. S. Tay、Nathan T. Jui、Stephen L. Buchwald

  DOI：10.1021/ol501531q

  日期：2014.7.18

  A direct method for the regioselective construction of benzimidazolones is reported wherein a single palladium catalyst is employed to couple monosubstituted urea substrates with differentially substituted 1,2-dihaloaromatic systems. In this method, the catalyst is able to promote a cascade of two discrete chemoselective C-N bond-forming processes that allows the highly selective and predictable formation of complex heterocycles from simple, readily available starting materials.
• Efficient Access to Cyclic Ureas via Pd-Catalyzed Cyclization
  作者：Mark McLaughlin、Michael Palucki、Ian W. Davies

  DOI：10.1021/ol061233j

  日期：2006.7.1

  An efficient regioselective method for the preparation of structurally diverse imidazopyridinones and benzoimidazolones starting from readily available and economical starting materials is described. High-yielding reductive alkylation of electron-deficient o-haloarylamines followed by treatment with inexpensive N-chlorosulfonyl isocyanate afforded primary ureas in good overall yields. A Pd-catalyzed urea cyclization reaction furnished imidazopyridinones and benzoimidazolones in excellent yields. Overall, the developed chemistry provides rapid access to pharmaceutically important heterocyclic compounds with high efficiency.