作者:Francisco Palacios、Sergio Pascual、Julen Oyarzabal、Ana M. Ochoa de Retana
DOI:10.1021/ol017254p
日期:2002.3.1
preparation of fluoroalkyl allylamines or alpha,beta-unsaturated ketones by an olefination reaction of primaryenamine phosphonates and aldehydes, followed by selective reduction with hydrides or hydrolysis, is reported. Fluorinated beta-amino nitriles are also obtained by an olefination reaction of primaryenamine phosphonates with aldehydes and subsequent addition of metalated acetonitrile.
Synthesis of Fluoroalkylated β-Aminophosphonates and Pyridines from Primary β-Enaminophosphonates
作者:Francisco Palacios、Ana M. Ochoa de Retana、Julen Oyarzabal、Sergio Pascual、Guillermo Fernández de Trocóniz
DOI:10.1021/jo8005667
日期:2008.6.1
and efficient stereoselective synthesis of fluorine containing β-aminophosphonates by reduction of β-enaminophosphonates is described. Reduction with sodium cyanborohydride in the presence of zinc chloride and the catalytic hydrogenation of β-enaminophosphonates gives β-aminophosphonates. β-Enaminophosphonates are also used as intermediates for the regioselective synthesis of fluoroalkyl-substituted pyridines
Preparation of Fluoroalkyl Imines, Amines, Enamines, Ketones, α-Amino Carbonyls, and α-Amino Acids from Primary Enamine Phosphonates
作者:Francisco Palacios、Ana María Ochoa de Retana、Sergio Pascual、Julen Oyarzabal
DOI:10.1021/jo048682m
日期:2004.12.1
A simple method for preparation of fluoroalkyl β-enaminophosphonates 1 from alkylphosphonates 2 and perfluoroalkyl nitriles 3 is reported. Olefination reaction of functionalized phosphates 1 with aldehydes gives α,β-unsaturated imines 5. Acid hydrolysis of these fluoroalkyl derivatives 5 affords α,β-unsaturated ketones 6, while their selectivereduction with hydrides leads to the formation of allylamines