One-Pot Synthesis of Dialkyl Arylaminomethyl- and (Arylamino)arylmethylphosphonates and Their<i>N</i>-Acylated Derivatives
作者:L. K. Lukanov、A. P. Venkov
DOI:10.1055/s-1992-26083
日期:——
A convenient synthesis of dialkyl arylaminomethyl- and (arylamino) arylmethylphosphonates 3 and their N-acylated derivatives 5 have been developed, starting from azomethines and phosphorus trichloride in the presence of an alcohol.
N–H insertion reactions of rhodium carbenoids. Part 1. Preparation of α-amino acid and α-aminophosphonic acid derivatives
作者:Enrique Aller、Richard T. Buck、Martin J. Drysdale、Leigh Ferris、David Haigh、Christopher J. Moody、Neil D. Pearson、J. Bobby Sanghera
DOI:10.1039/p19960002879
日期:——
Rhodium(II) acetate-catalyseddecomposition of diazophenylacetates 1 and 3 in the presence of a range of N–H compounds results in an N–H insertion reaction of the intermediate carbenoids and formation of N-substituted phenylglycine derivatives 2 and 4. The corresponding reactions of dimethyl α-diazobenzylphosphonate 5 constitute a simple route to aminophosphonates 6.
efficient, and general method has been developed for the one-pot, three-component synthesis of α-aminophosphonates from condensation reaction of trimethyl phosphite, aryl aldehydes and aryl amines in the presence of CoCl 2 ·6H 2 O under solvent-free conditions. Thus α -aminophosphonates were synthesized relatively quickly in good yields at roomtemperature.
Radical Cation Salt-initiated Aerobic C−H Phosphorylation of <i>N</i>
-Benzylanilines: Synthesis of α-Aminophosphonates
作者:Xiaodong Jia、Xiaofei Liu、Yu Yuan、Pengfei Li、Wentao Hou、Kaixuan He
DOI:10.1002/asia.201800584
日期:2018.8.6
A radicalcationsalt‐initiated phosphorylation of N‐benzylanilines was realized through an aerobic oxidation of the sp3 C−H bond, providing a series of α‐aminophosphonates in high yields. An investigation of the reaction scope revealed that this mild catalyst system is superior in good functional group tolerance and high reaction efficiency. The mechanistic study implied that the cleavage of the sp3