prepared, the new dialkyl-2-(N-arylindolyl)phosphines (cataCXium P) perform excellently in the palladium-catalyzed amination of aryl and heteroaryl chlorides. Coupling of both activated and deactivated chloroarenes proceeds under mild conditions (room temperature to 60 degrees C). By using optimized conditions remarkable catalyst productivity (total turnover number, TON, up to 8000) and activity (turnover
Nitrogen-containing monodentate phosphines and their use in catalysis
申请人:Zapf Alexander
公开号:US20070123707A1
公开(公告)日:2007-05-31
The present invention relates to novel nitrogen—containing monodentate phosphane ligands of formula (I) and to their use in catalytic reactions, especially in the improvement of haloaromatic compounds.
[EN] NITROGEN-CONTAINING MONODENTATE PHOSPHINES AND THEIR USE IN CATALYSIS<br/>[FR] PHOSPHINES MONODENTELEES CONTENANT DE L'AZOTE ET LEUR UTILISATION DANS UNE CATALYSE
申请人:DEGUSSA
公开号:WO2004101581A3
公开(公告)日:2005-03-03
A short and efficient synthesis of N-aryl- and N-heteroaryl-N′-(arylalkyl)piperazines
A new synthesis of N-aryl- and N-heteroaryl-N'-(arylalkl)pipeazines using palladium-catalyzed amination of aryl bromicies and heteroaryl chlorides with mono N-benzyl- or N-(arylethyl)piperazines is reported. Most coupling processes proceed in high yield and good selectivity using either diadmantyl-n-butylphosphine (1), 2-(dicyclohexylphosphino)-2'-(N,N-dimethylamino)biphenyl (2), or 2-((di-tert-butylphosphino)biphenyl (3) as ligand. Applying an automated parallel synthesizer the preparation of a small library of potentially bioactive compounds is easily achieved. (C) 2004 Published by Elsevier Ltd.
PYRIDYL-PIPERAZINYL-PHENYL-OXAZOLIDINONE DERIVATIVES AND THEIR USE AS ANTIBACTERIALS