stepwise mechanism. The Hammett plot for the reactions of 1b−j exhibited a poor correlation with σ- constants (R2 = 0.962) but slightly better correlation with σo (R2 = 0.986). However, the Yukawa−Tsuno plot for the same reactions resulted in an excellent correlation (R2 = 0.9993) with an r value of 0.30. The aminolysis of 1a−j has been suggested to proceed through a concerted mechanism with an early
Practical Synthesis of Phosphinic Amides/Phosphoramidates through Catalytic Oxidative Coupling of Amines and P(O)−H Compounds
作者:Chen Tan、Xinyuan Liu、Huanxin Jia、Xiaowen Zhao、Jian Chen、Zhiyong Wang、Jiajing Tan
DOI:10.1002/chem.201904237
日期:2020.1.16
Herein, we report a highly efficient ZnI2 -triggered oxidative cross-coupling reaction of P(O)-H compounds and amines. This operationally simple protocol provides unprecedented generic access to phosphinic amides/phosphoramidate derivatives in good yields and short reaction time. Besides, the reaction proceeds under mild conditions, which avoids the use of hazardous reagents, and is applicable to scale-up
Aminolyses of Aryl Diphenylphosphinates and Diphenylphosphinothioates: Effect of Modification of Electrophilic Center from PO to PS
作者:Ik-Hwan Um、Kalsoom Akhtar、Young-Hee Shin、Jeong-Yoon Han
DOI:10.1021/jo070171n
日期:2007.5.1
small degree of bondfission. Reactions of 2,4-dinitrophenyl diphenylphosphinothioate (2a) with alicyclic secondary amines result in a good linear Brønsted-type plot with βnuc = 0.52, implying that the reactions proceed through a concerted mechanism. The βnuc value determined for the reactions of 2a is slightly larger than that reported for the corresponding reactions of 2,4-dinitrophenyl diphenylphosphinate
molecules are important and versatilecompounds, for a broad field of applications, novel synthetic approaches are of interest to both academia and industry. As an example, the single-step synthesis of the bridged 1,3-phenylene bis(diphenylphosphinate) with potential flame-retardant properties was added to this study. In addition, the reaction is utilized for the synthesis of a novel organophosphorus
Efficient electrosynthesis of phosphinic amides via oxidative cross-coupling between N–H/P–H
作者:Yukang Wang、Peng Qian、Ji-Hu Su、Yanan Li、Meixiang Bi、Zhenggen Zha、Zhiyong Wang
DOI:10.1039/c7gc01989k
日期:——
A facile and efficient approach to phosphinicamides was developed from diarylphosphine oxides and amines via electrosynthesis. A variety of phosphinicamides were obtained in one step with good to excellent yields under mild and metal-free conditions. The corresponding mechanism was investigated.