O -Silyl triflate-promoted addition of diethyl phosphite to chiral aldonitrones. A rapid access to complex α-amino phosphonates and their N -hydroxy derivatives
作者:Carmela De Risi、Alessandro Dondoni、Daniela Perrone、Gian Piero Pollini
DOI:10.1016/s0040-4039(01)00363-x
日期:2001.4
The addition reaction of diethyl phosphite to O-silylated N-benzyl nitrones derived from chiral alpha -alkoxy and N-Boc alpha -amino aldehydes has been studied as a stereoselective carbon-phosphorus bond forming process for the synthesis of polyhydroxylated alpha -amino and alpha,beta -diamino phosphonates. Key intermediates are the corresponding N-hydroxy alpha -amino phosphonates. (C) 2001 Elsevier Science Ltd. All rights reserved.
A New and Expedient Diastereoselective Synthesis of α-(Hydroxyamino)phosphonates and α-Aminophosphonates by Silyl Triflate Promoted Diethyl Phosphite Addition to Chiral N-Benzyl Nitrones
作者:Carmela De Risi、Daniela Perrone、Alessandro Dondoni、Gian Piero Pollini、Valerio Bertolasi
DOI:10.1002/ejoc.200200698
日期:2003.5
efficient methodology for the synthesis of α-aminophosphonates has been developed taking advantage of the tert-butyldimethylsilyl triflate activated addition of diethylphosphite to N-benzylnitrones derived from chiral α-alkoxy and α-(Boc-amino) aldehydes. The stereoselective carbon− phosphorus bond-forming reaction proceeded smoothly to give α-(hydroxyamino)phosphonate intermediates as the primary