Use of acylphosphonates for the synthesis of α-chlorinated carboxylic and α,α′-dichloro dicarboxylic acids and their derivatives
摘要:
alpha -Chloro acylphosphonates and alpha,alpha'-dichloro bisacylphosphonates were prepared in situ by chlorination of acylphosphonates and bisacylphosphonates, respectively, using sulfuryl chloride. Subsequently, they were cleaved to the corresponding alpha -chlorinated or alpha,alpha'-dichlorinated (di)carboxylic acids with a hydrogen peroxide-sodium bicarbonate system. Performing the cleavage with an alcohol or an amine yielded the corresponding alpha -chlorinated esters and alpha -chlorinated amides, respectively. (C) 2001 Elsevier Science Ltd. All rights reserved.
Synthesis and biological evaluation of novel <i>N</i>-α-haloacylated homoserine lactones as quorum sensing modulators
作者:Michail Syrpas、Ewout Ruysbergh、Christian V Stevens、Norbert De Kimpe、Sven Mangelinckx
DOI:10.3762/bjoc.10.265
日期:——
N-alpha-haloacylated homoserine lactones, in which a halogen atom was introduced at the alpha-position of the carbonyl function of the N-acyl chain, have been studied as quorumsensing (QS) modulators and compared with a library of natural N-acylated homoserine lactones (AHLs). The series of novel analogues consists of alpha-chloro, alpha-bromo and alpha-iodo AHL analogues. Furthermore, the biological QS activity of
The acylphosphonate function as an activating and masking moiety for the α-chlorination of fatty acids
作者:Christian Stevens、Laurent De Buyck、Norbert De Kimpe
DOI:10.1016/s0040-4039(98)01939-x
日期:1998.11
α-Chloroacylphosphonates were prepared in situ by chlorination of acylphosphonates using sulfurylchloride and were subsequently cleaved to the corresponding α-chlorinated fatty acids with hydrogen peroxide - sodium bicarbonate.
Fungicidal activity of esters of acyl- and vinylphosphonic acids
作者:Zh. V. Molodykh、I. A. Aleksandrova、R. U. Belyalov、T. Kh. Gazizov、V. S. Reznik
DOI:10.1007/bf00766865
日期:1990.2
Enantioselective Synthesis of α-Hydroxy and α-Amino Phosphonates via Catalytic Asymmetric Hydrogenation
作者:Mark J. Burk、Timothy A. Stammers、Judith A. Straub
DOI:10.1021/ol9906099
日期:1999.8.1
[GRAPHICS]Cationic rhodium catalysts of the C-2 symmetric DuPHOS (1) and BPE (2) ligands have demonstrated the ability to asymmetrically hydrogenate a novel series of enol phosphonates (3) in good to excellent enantiomeric excess under mild conditions. Initial studies toward the catalytic asymmetric hydrogenation of enamido phosphonates (6 and 7) using the DuPHOS-Rh+ catalysts are also reported.