2,3-dihydro-1-(4-tolylsulfonyl)-1H-benzimidazol-2-one | 3968-04-5

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 2,3-dihydro-1-(4-tolylsulfonyl)-1H-benzimidazol-2-one
• 英文别名: 1-tosyl-1H-benzo[d]imidazol-2(3H)-one；1-(toluene-4-sulfonyl)-1,3-dihydro-benzoimidazol-2-one；1-(p-Toluol-sulfonyl)-2(3H)-benzimidazolon-(2)；1-(p-Toluol-sulfonyl)-2(3H)-benzimidazolon；3-(4-methylphenyl)sulfonyl-1H-benzimidazol-2-one
• CAS: 3968-04-5
• 化学式: C₁₄H₁₂N₂O₃S
• 分子量: 288.327
• InChiKey: XKPIZUOWBPXNLD-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.2
• 重原子数：
  20
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.07
• 拓扑面积：
  74.9
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  2-羟基苯并咪唑 在 盐酸 、 4-二甲氨基吡啶 、 sodium hydride 、 三乙胺 作用下， 以 乙醚 、 二氯甲烷 、 N,N-二甲基甲酰胺 、 乙腈 为溶剂， 反应 30.5h， 生成 2,3-dihydro-1-(4-tolylsulfonyl)-1H-benzimidazol-2-one
  参考文献：
  名称：

  N-Arylsulfonyl-benzimidazolones as Potential Hypoglycemic Agents

  摘要：

  将标题和段落翻译成中文：

  通过在NaOH存在下将苯并咪唑酮与芳基磺酰氯反应合成了1,3-双(芳基磺酰基)-苯并咪唑酮1a-d。通过保护一个Na原子与叔丁氧羰基团化合后进行芳基磺酰化和在酸性介质中去保护，制备了单(芳基磺酰基)-苯并咪唑酮衍生物5a-c。确定了三种化合物1a、1c和5a的抗糖尿病活性。

  DOI：

  10.1515/znb-2002-0315

文献信息

• P(III)‐Assisted Electrochemical Access to Ureas via in situ Generation of Isocyanates from Hydroxamic Acids
  作者：Haiwen Meng、Kunhui Sun、Zhimin Xu、Lifang Tian、Yahui Wang

  DOI：10.1002/ejoc.202100113

  日期：2021.3.19

  P(III)‐assisted electrochemical generation of isocyanates from hydroxamic acids was successfully applied in the synthesis of ureas. Hydroxamic acids were directly used without pre‐activation, and the reaction was found not sensitive to water or air. The process started with the anodic oxidation of hydroxamic acids, followed by reacting with trivalent phosphine to form corresponding alkoxyphosphoniums

  由异羟肟酸的P（III）辅助电化学生成异氰酸酯已成功应用于尿素的合成中。直接使用异羟肟酸而不进行预活化，发现该反应对水或空气不敏感。该方法开始于异羟肟酸的阳极氧化，然后与三价膦反应形成相应的烷氧基phosph，然后重排以得到异氰酸酯。
• N-Arylsulfonyl-benzimidazolones as Potential Hypoglycemic Agents
  作者：Iftikhar Ahmad、Shahid Hameed、Helmut Duddeck、Sigurd Lenzen、Ingo Rustenbeck、Roshan Ahmad

  DOI：10.1515/znb-2002-0315

  日期：2002.3.1

  1,3-Bis(arylsulfonyl)-benzimidazolones 1a-d were synthesized by reacting benzimidazolones with arenesulfonyl chlorides in the presence of NaOH. Mono(arylsulfonyl)-benzimidazolone derivatives 5a-c were prepared from benzimidazolone by protecting one of the Natoms with a tert-butoxycarbonyl group followed by arylsulfonylation and deprotection in acidic medium. The antidiabetic activity of three compounds 1a, 1c and 5a has been determined.

  将标题和段落翻译成中文：

  通过在NaOH存在下将苯并咪唑酮与芳基磺酰氯反应合成了1,3-双(芳基磺酰基)-苯并咪唑酮1a-d。通过保护一个Na原子与叔丁氧羰基团化合后进行芳基磺酰化和在酸性介质中去保护，制备了单(芳基磺酰基)-苯并咪唑酮衍生物5a-c。确定了三种化合物1a、1c和5a的抗糖尿病活性。

• Direct Synthesis of N-Monosubstituted Benzimidazol-2-ones via Ph3P–I2-Mediated Reaction of Hydroxamic Acids
  作者：Wong Phakhodee、Nittaya Wiriya、Dolnapa Yamano、Surat Hongsibsong、Mookda Pattarawarapan

  DOI：10.1055/s-0040-1719897

  日期：2022.9

  A facile approach for the synthesis of benzimidazolones via a Ph3P–I2 promoted reaction of hydroxamic acids is reported. Upon Lossen-type rearrangement of the O-activated hydroxamic acids, the in situ generated isocyanates undergo an intramolecular attack by ortho N-nucleophiles producing the cyclized products in good yields under mild conditions. The method allows the direct preparation of a single

  报道了一种通过Ph 3 P-I 2促进的异羟肟酸反应合成苯并咪唑酮的简便方法。在 O 活化异羟肟酸的 Lossen 型重排后，原位生成的异氰酸酯受到邻N-亲核试剂的分子内攻击，在温和条件下以良好的收率产生环化产物。该方法允许使用易于获得的起始材料和具有广泛底物范围的低成本试剂直接制备 N-单取代衍生物的单一区域异构体。
• Regiospecific Functionalization of 1,3-Dihydro-2H-benzimidazol-2-one and Structurally Related Cyclic Urea Derivatives
  作者：Nicholas A. Meanwell、Sing Yuen Sit、Jinnian Gao、Henry S. Wong、Qi Gao、Denis R. St. Laurent、Neelakantan Balasubramanian

  DOI：10.1021/jo00111a014

  日期：1995.3

  Methods for selectively protecting one of the degenerate nitrogen atoms of the cyclic urea derivatives 1,3-dihydro-2H-benzimidazol-2-one (6a), 1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one (11), 1,3-dihydro-2H-imidazo[4,5-b]quinolin-2-ones (20), 1,3-dihydro-2H-imidazo[4,5-c]pyridin-2-one (22), and 1,3-dihydro-4-phenyl-2H-imidazol-2-one (27) were developed. Heating these cyclic ureas with ethyl 2-pyridyl carbonate in the presence of a base in CH3CN at reflux or DMF at 100 degrees C cleanly provided the monoethoxycarbonyl derivatives 7a, 12, 21, 23, and 28, respectively. Alternatively, treatment of 6a with an excess of diethyl pyrocarbonate or di-tert-butyl dicarbonate afforded the bis-alkoxycarbonyl derivatives 8a and 8b, respectively, which underwent disproportionation to 7a and 7b upon heating with 1 mol equiv of 6a and K2CO3 in CH3CN at reflux. The regiochemistry of the introduction of alkoxycarbonyl groups to benzimidazol-2-one derivatives was not significantly influenced by an electron-withdrawing (CF3, 6b) or an electron-donating (OCH3, 6c) substituent at C-5 of the heterocyclic ring. However, the reaction was found to be sensitive to steric factors since a chlorine substituent ortho to one of the urea N atoms (6e) completely directed the alkoxycarbonyl moiety to the less sterically encumbered N atom, affording a single product (7f, 7g). Alkylation of 7a-g proceeded efficiently to provide products 10a-10ag after removal of the protecting group. Halogenation of monoprotected benzimidazol-2-one 7a occurred regiospecifically to give the monohalo derivatives 7h, 7i, and 7k, the identity of which were readily established from the characteristic chemical shift and spin coupling pattern in their 1H NMR spectra. A protecting group interchange strategy that took advantage of the distinctive chemical reactivities of the EtO(2)C and t-BuO(2)C protecting groups toward isopropylamine was developed that provided access to the isomerically substituted series of monohalo, mono-N-alkylated benzimidazol-2-ones 71 and 7m. The efficient derivatization of the unprotected N atom of these monoprotected cyclic urea derivatives was accomplished by treating with activated and unactivated halides in the. presence of K2CO3 or exposure to alcohols under Mitsunobu conditions. In several cases, mixtures of O- and N-alkylated products were produced which were readily separated by chromatography. Alkylation of 7h with activated halides, using K2CO3 in CH3CN at reflux, occurred without protecting group equilibration; however, a mixture of isomeric alkylated products was obtained when 7h was heated at 110 degrees C in DMF with cyclohexylmethyl bromide in the presence of K2CO3 as the base. Derivatization of 7h under Mitsunobu reaction conditions proceeded with retention of the topological substituent relationships. Subsequent removal of the alkoxycarbonyl moiety afforded monoalkylated cyclic urea derivatives.
• MACHIN J.; SMITH D. M., J. CHEM. SOC. PERKIN TRANS., PART 1, 1979, NO 5, 1371-1378
  作者：MACHIN J.、 SMITH D. M.

  DOI：——

  日期：——