N-benzyl-N-(tert-butyl)diphenylphosphinamide | 439912-52-4

• 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: N-benzyl-N-(tert-butyl)diphenylphosphinamide
• 英文别名: N-benzyl-N-diphenylphosphoryl-2-methylpropan-2-amine
• CAS: 439912-52-4
• 化学式: C₂₃H₂₆NOP
• 分子量: 363.439
• InChiKey: DYIRTKWJGATEPU-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.2
• 重原子数：
  26
• 可旋转键数：
  6
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.22
• 拓扑面积：
  20.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  N-benzyl-N-(tert-butyl)diphenylphosphinamide 在 六甲基磷酰三胺 、 N,N-二甲基丙烯基脲 、 仲丁基锂 、 2,6-二叔丁基-4-甲基苯酚 作用下， 以 四氢呋喃 、 环己烷 为溶剂， 反应 1.0h， 以69%的产率得到(2SpRp,8RS,9SR)-2,3,4,7-tetrahydro-N-tert-butyl-3-phenylbenzo[c]-1-aza-2λ⁵-phosphole 2-oxide
  参考文献：
  名称：

  Regio- and Diastereoselective Preparation of Tetrahydrobenzo[c]-1-aza-2λ⁵-phospholes through Dearomatization Cyclization of Lithiated N-Benzyl-N-alkyl(diphenyl)phosphinamides. Synthesis of γ-(N-Alkylamino)phosphinic Acids

  摘要：

  A study of the protonation of the cycloadducts derived from the dearomatization reaction of lithiated N-alkyl-N-benzyldiphenylphosphinamides has been carried out. The regio- and stereoselectivity of the process has been analyzed in terms of the size of the N-alkyl substituent, the acidity and size of the protonating reagent, and the cosolvent used. The optimization of these variables allowed the preparation of tetrahydrobenzo[c]-1-aza-2lambda(5)-phospholes containing a 1,3-cyclohexadiene or 1,4-cyclohexadiene system with moderate to excellent regio- and stereocontrol. The heterocycles were readily hydrolyzed, affording gamma-(N-alkylamino)diphenylphosphinic acids with the functionalities linked to a cyclohexadiene substructure.

  DOI：

  10.1021/jo025587+
• 作为产物：
  描述：

  N-tert-butyl-1,1-diphenylphosphinamine 在 sodium hydride 作用下， 以 四氢呋喃 、 甲苯 为溶剂， 反应 2.0h， 生成 N-benzyl-N-(tert-butyl)diphenylphosphinamide
  参考文献：
  名称：

  Regio- and Diastereoselective Preparation of Tetrahydrobenzo[c]-1-aza-2λ⁵-phospholes through Dearomatization Cyclization of Lithiated N-Benzyl-N-alkyl(diphenyl)phosphinamides. Synthesis of γ-(N-Alkylamino)phosphinic Acids

  摘要：

  A study of the protonation of the cycloadducts derived from the dearomatization reaction of lithiated N-alkyl-N-benzyldiphenylphosphinamides has been carried out. The regio- and stereoselectivity of the process has been analyzed in terms of the size of the N-alkyl substituent, the acidity and size of the protonating reagent, and the cosolvent used. The optimization of these variables allowed the preparation of tetrahydrobenzo[c]-1-aza-2lambda(5)-phospholes containing a 1,3-cyclohexadiene or 1,4-cyclohexadiene system with moderate to excellent regio- and stereocontrol. The heterocycles were readily hydrolyzed, affording gamma-(N-alkylamino)diphenylphosphinic acids with the functionalities linked to a cyclohexadiene substructure.

  DOI：

  10.1021/jo025587+

文献信息

• Synthesis of Functionalized 1,4-Cyclohexadienes through Intramolecular Anionic Dearomatization of <i>N</i>-Alkyl-<i>N</i>-benzyldiphenylphosphinamides. Insight into the Reaction Mechanism
  作者：Ignacio Fernández、Angela Forcén-Acebal、Santiago García-Granda、Fernando López-Ortiz

  DOI：10.1021/jo0342370

  日期：2003.5.1

  intramolecular nucleophilic dearomatization-electrophilic alkylation reactions of N-alkyl-N-benzyldiphenylphosphinamide anions is presented. The process has been optimized by analyzing the effects of metalation and quench times, additives, the nature of the electrophiles used (MeI, CF(3)SO(3)Me, Me(3)O(+)BF(4)(-), AllylBr, PhCH(2)Br, BrCH(2)CO(2)Me, and RCH=O, where R = Ph, 4-Cl-C(6)H(4), 4-MeO-C(6)H(4), and

  介绍了N-烷基-N-苄基二苯基次膦酰胺阴离子的分子内亲核脱芳香化-亲电烷基化反应的一般化。通过分析金属化和淬火时间，添加剂，所用亲电试剂的性质（MeI，CF（3）SO（3）Me，Me（3）O（+）BF（4）（- ），烯丙基溴，PhCH（2）Br，BrCH（2）CO（2）Me和RCH = O，其中R = Ph，4-Cl-C（6）H（4），4-MeO-C（6 ）H（4）和（i）（）Pr），以及与次膦酰胺氮原子相连的烷基取代基。HMPA和DMPU均充当催化剂。事实证明，后者对于获得高产率的含有1，4-环己二烯系统的具有很高区域和非对映选择性的取代四氢苯并[c] [1,2] -1lambda（5）-磷脂具有更高的效率。苄基阴离子附近的立体效应倾向于降低阴离子环化的立体选择性。优化研究还通过鉴定几种中间物种并显示了阴离子环化步骤以及与醛的反应的可逆性，阐明了脱芳香化过程的反应机理。