Double Hydrophosphorylation of Nitriles Catalyzed by Rare-Earth-Metal Lanthanum
作者:Yesmin Akter Rina、Joseph A. R. Schmidt
DOI:10.1021/acs.joc.0c02016
日期:2020.11.20
A high-yielding and atom-efficient protocol for the double hydrophosphorylation of nitriles using a lanthanum-based N,N-dimethylbenzylamine complex (La(DMBA)3) as a precatalyst is reported. This method provides a straightforward and convenient approach for the synthesis of biologically important organophosphorus compounds known as N-(α-phosphoryl)amidophosphates in good to excellent yields. Nitriles
Synthesis of Substituted<i>N</i>-Formylaminomethylenediphosphonates and Their Derivatives
作者:Andrey A. Prishchenko、Mikhail V. Livantsov、Olga P. Novikova、Ludmila I. Livantsova、Gleb M. Averochkin、Valery S. Petrosyan
DOI:10.1002/hc.21274
日期:2015.11
The convenient methods for the synthesis of new trimethylsilyl esters of aminomethylenediphosphonic acids are elaborated. The new substituted N-formylaminomethylenediphosphonates are obtained via the interaction of trimethylsilyl esters of methylenediphosphonic acids with a mixture of triethyl orthoformate and ethanol. Also boron trifluoride–diethyl etherate as an effective catalyst is used for the
In this study, the double addition of dialkylphosphite to nitriles in a ZnCl2/Et3N system is described. The reaction was conveniently and directly used for the synthesis of biologically important 1-aminobisphosphonates (ABPs) from nitriles. The one-pot synthesis of 1-aminobisphosphonates from aldehydes via the in situ generation of nitriles is also described.
Synthesis of (aminomethylene)bisphosphonic acid derivatives
作者:A. A. Prishchenko、M. V. Livantsov、O. P. Novikova、L. I. Livantsova、V. S. Petrosyan
DOI:10.1007/s11172-016-1289-z
日期:2016.1
Amino derivatives of methylenebisphosphonic acids were synthesized by phosphorylation of formamide, nitriles or hydrochlorides of alkyl imidates with H3PO3—PCl3—(Me3Si)2NH.