1-benzyl-3-bromo-4-phenyl-1-azaspiro[4.5]deca-3,6,9-triene-2,8-dione | 1078120-28-1

• 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: 1-benzyl-3-bromo-4-phenyl-1-azaspiro[4.5]deca-3,6,9-triene-2,8-dione
• CAS: 1078120-28-1
• 化学式: C₂₂H₁₆BrNO₂
• 分子量: 406.279
• InChiKey: RVYRYFSCBOXNQP-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.8
• 重原子数：
  26
• 可旋转键数：
  3
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.09
• 拓扑面积：
  37.4
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  N-benzyl-N-(4-methoxyphenyl)-3-phenylpropiolamide 在 lithium perchlorate 、 lithium bromide 作用下， 以 乙腈 为溶剂， 反应 2.0h， 以92%的产率得到1-benzyl-3-bromo-4-phenyl-1-azaspiro[4.5]deca-3,6,9-triene-2,8-dione
  参考文献：
  名称：

  N-芳基烷基酰胺的电化学氧化卤代反应合成螺[4.5]三烯酮

  摘要：

  我们开发了一种通过N-芳基炔酰胺的电化学氧化卤代环化合成螺[4.5]三烯酮的绿色方法。该反应在室温下在无金属催化剂和无外源氧化剂的条件下进行。使用现成的LiCl，LiBr和LiI作为卤素源，可以得到具有良好收率或优异收率的多种脱芳族卤代-螺环化产品，并具有广泛的范围和官能团耐受性。

  DOI：

  10.1021/acs.joc.0c02429

文献信息

• Electrochemical Oxidative Halogenation of <i>N</i>-Aryl Alkynamides for the Synthesis of Spiro[4.5]trienones
  作者：Ke Yu、Xianqiang Kong、Jiajun Yang、Guodong Li、Bo Xu、Qianjin Chen

  DOI：10.1021/acs.joc.0c02429

  日期：2021.1.1

  We developed a green method for the synthesis of spiro[4.5]trienones through an electrochemical oxidative halocyclization with N-aryl alkynamides. This reaction was conducted under metal-catalyst- and exogenous-oxidant-free conditions at room temperature. Using readily available LiCl, LiBr, and LiI as the halogen source, a variety of dearomative halo-spirocyclization products were obtained in good

  我们开发了一种通过N-芳基炔酰胺的电化学氧化卤代环化合成螺[4.5]三烯酮的绿色方法。该反应在室温下在无金属催化剂和无外源氧化剂的条件下进行。使用现成的LiCl，LiBr和LiI作为卤素源，可以得到具有良好收率或优异收率的多种脱芳族卤代-螺环化产品，并具有广泛的范围和官能团耐受性。
• ZnBr₂-Mediated oxidative spiro-bromocyclization of propiolamide for the synthesis of 3-bromo-1-azaspiro[4.5]deca-3,6,9-triene-2,8-dione
  作者：Yicheng He、Guanyinsheng Qiu

  DOI：10.1039/c7ob00293a

  日期：——

  ZnBr2-Mediated oxidative spiro-bromocyclization of N-arylpropiolamide has been described herein for the synthesis of 3-bromo-1-azaspiro[4.5]deca-3,6,9-triene-2,8-dione with high efficiency. One equivalent of water was introduced into the final product. The reaction efficiently proceeded at room temperature, and an excellent tolerance of functional groups was demonstrated. Under standard conditions

  本文已经描述了ZnBr 2介导的N-芳基丙酰胺酰胺的氧化螺-溴环化，用于高效合成3-溴-1-氮杂螺[4.5] deca-3,6,9-三烯-2,8-二酮。将一当量的水引入到最终产品中。该反应在室温下有效地进行，并且显示出优异的官能团耐受性。在标准条件下，3-溴-1-氧杂螺[4.5] deca-3,6,9-三烯-2,8-二酮和3-溴-1-氮杂螺[4.5] deca-3,6,9-trien-合成了8个。
• Metal‐Free <i>ipso</i>‐Halocyclization of <i>N</i>‐Arylpropynamides Using Hypervalent Iodine(III) Reagents under Aqueous Condition
  作者：Pankaj Jangir、Kalu Ram Bajya、Akshay S. Pathare、Mohammad Sodoor、Rinku Saini、Mukesh Purohit、Sermadurai Selvakumar

  DOI：10.1002/ejoc.202400203

  日期：——

  An efficient intramolecular ipso-halocyclization of para-unsubstituted N-arylpropynamides proceeds using readily available hypervalent iodine reagents as oxidant and potassium halides as halogen source under aqueous medium. This method shows a broad substrate scope and doesn't require any metal catalysts.

  使用容易获得的高价碘试剂作为氧化剂和卤化钾作为卤素源，在水性介质下对未取代的N-芳基丙酰胺进行有效的分子内卤环化。该方法显示了广泛的底物范围并且不需要任何金属催化剂。
• Intramolecular <i>ipso</i>-Halocyclization of 4-(<i>p</i>-Unsubstituted-aryl)-1-alkynes Leading to Spiro[4,5]trienones: Scope, Application, and Mechanistic Investigations
  作者：Bo-Xiao Tang、Yue-Hua Zhang、Ren-Jie Song、Dong-Jun Tang、Guo-Bo Deng、Zhi-Qiang Wang、Ye-Xiang Xie、Yuan-Zhi Xia、Jin-Heng Li

  DOI：10.1021/jo300037n

  日期：2012.3.16

  A new, general method for the synthesis of spiro[4,5]trienores is described by the intramolecular ipso-halocyclization of 4-(p-unsubstituted-aryl)-1-alkynes. In the presence of halide electrophiles, a variety of 4-(p-unsubstituted-aryl)-1-alkynes underwent the intramolecular ipso-halocyclization with water smoothly, affording the corresponding halo-substituted spiro[4,5]trienones in moderate to good yields. The obtained spiro[4,5]trienones can be applied in constructing the azaquaternary tricyclic skeleton via Pd-catalyzed Heck reaction. Notably, the prepared spiro[4,5]trienones and azaquaternary tricycles are of importance in the areas of pharmaceuticals and agrochemicals. The mechanism of the intramolecular ipso-halocyclization reaction is also discussed according to the O-18-labeling experiments and DFT calculations.
• Electrophilic <i>ipso</i>-Cyclization of <i>N</i>-(<i>p</i>-Methoxyaryl)propiolamides Involving an Electrophile-Exchange Process
  作者：Bo-Xiao Tang、Qin Yin、Ri-Yuan Tang、Jin-Heng Li

  DOI：10.1021/jo8018297

  日期：2008.11.21

  A novel electrophilic ipso-cyclization involving an electrophile-exchange process has been developed. In the presence of CuX (X = I, Br, SCN) and electrophilic fluoride reagents, a variety of N-(p-methoxyaryl)propiolamides and 4-methoxyphenyl 3-phenylpropiolate were cyclized to selectively afford the corresponding spiro[4.5]decenones in moderate to good yields. It is noteworthy that two azaquaternary tricyclic products were synthesized through a two-step pathway involving an electrophilic ipso-cyclization and then an intramolecular Heck reaction.