Insertion of Arynes into Arylphosphoryl Amide Bonds: One-Step Simultaneous Construction of C–N and C–P Bonds
摘要:
The insertion of arynes into arylphosphoryl amide bonds to synchronously construct C-P and C-N bonds is described. Arynes generated in situ from o-triflate arylsilanes under fluoride-promoted conditions insert into relatively inert P-N bonds, producing o-amine-substituted arylphosphine oxides. This process provides a simple pathway for the preparation of precursors for a number of bidentate aminophosphine ligands.
Redox-Neutral P(O)–N Coupling between P(O)–H Compounds and Azides via Dual Copper and Photoredox Catalysis
作者:Yanan Wu、Ken Chen、Xia Ge、Panpan Ma、Zhiyuan Xu、Hongjian Lu、Guigen Li
DOI:10.1021/acs.orglett.0c02207
日期:2020.8.7
We report a redox-neutral P(O)–N coupling reaction of P(O)–H compounds with azides via photoredox and copper catalysis, providing new access to useful phosphinamides, phosphonamides, and phosphoramides. This transformation tolerates a wide range of nucleophilic functionalities including alcohol and amine nucleophiles, which makes up for the deficiency of classical nitrogen nucleophilic substitution
Ligand-free copper-catalyzed denitrogenative arylation of phosphorylamides with arylhydrazines
作者:Qiao Zhu、Shiying Che、Zhenghong Luo、Zijian Zhao
DOI:10.1080/00397911.2020.1725577
日期:2020.4.2
Abstract A straightforward arylation of phosphorylamides with arylhydrazines hydrochloride was herein demonstrated. The protocol proceeded in the presence of a catalytic loading of Cu(OAc)2 as the catalyst, DTBP as the external oxidant and Cs2CO3 as the base, but without any ligands. And a series of N-aryl phosphorylamides were successfully obtained in high efficiency (up to 93% yields) with good substituents
The Chan-Evans-Lam N -arylation of phosphonic/phosphinic amides
作者:Yuqin Xu、Qiong Su、Wanrong Dong、Zhihong Peng、Delie An
DOI:10.1016/j.tet.2017.06.028
日期:2017.8
A stoichiometric copper(II)-mediated arylation protocol of phosphinamides and phosphonamides was herein demonstrated. Various unreported N-aryl phosphinamides and phosphonamides were successfully prepared through Chan-Evans-Lam reaction with high efficiency (up to 88% yields) and good functional groups tolerance (30 examples) in the absence of any ligands or co-catalysts.
Insertion of Arynes into Arylphosphoryl Amide Bonds: One-Step Simultaneous Construction of C–N and C–P Bonds
作者:Chaoren Shen、Guoqiang Yang、Wanbin Zhang
DOI:10.1021/ol402748u
日期:2013.11.15
The insertion of arynes into arylphosphoryl amide bonds to synchronously construct C-P and C-N bonds is described. Arynes generated in situ from o-triflate arylsilanes under fluoride-promoted conditions insert into relatively inert P-N bonds, producing o-amine-substituted arylphosphine oxides. This process provides a simple pathway for the preparation of precursors for a number of bidentate aminophosphine ligands.