Synthesis of neutral nickel–methyl complexes with monodentate imines and their sequential insertion of carbon monoxide and imine
作者:Carolyne Stafford、Bruce A. Arndtsen
DOI:10.1016/j.ica.2010.12.024
日期:2011.4
Neutral nickel-imine complexes of the form (N boolean AND O)Ni(R)((RN)-N-1=C(H)R-2) (N boolean AND O = salicylaldiminato; R = CH3, Ph; R-1 = alkyl; R-2 = aryl) can be prepared by the reaction of (tmeda)Ni(CH3)(2), imine and the corresponding salicylaldiminato ligand. The addition of carbon monoxide to these complexes lead to the in situ generation of the corresponding nickel-acyl complexes. With N-methyl or N-benzyl substituted imines, these complexes reductively eliminate the phenolic and acyl ligands to generate esters. However, the less sterically encumbered 3,4-dihydroisoquinoline can couple with the nickel-acyl ligand to form 1,2-diamides in high yield. In situ H-1 NMR analysis suggests this reaction occurs via insertion of imine into the nickel-acyl bond to form a nickel-bound amide complex.[GRAPHICS](C) 2010 Elsevier B. V. All rights reserved.
CATALYST FOR POLYMERIZING NORBORNENE MONOMERS AND A METHOD FOR PRODUCING NORBORNENE POLYMER
申请人:Showa Denko K.K.
公开号:EP2614091B1
公开(公告)日:2016-04-20
CATALYST FOR POLYMERIZATION OF NORBORNENE MONOMERS, METHOD FOR PRODUCING NORBORNENE POLYMER, METHOD FOR PRODUCING NORBORNENE COPOLYMER, NORBORNENE POLYMER AND TRANSITION METAL COMPLEX
申请人:SHOWA DENKO K.K.
公开号:US20130059993A1
公开(公告)日:2013-03-07
A catalyst for a polymerization of norbornene monomers includes a transition metal complex represented by a formula (1). A method for producing a norbornene copolymer includes copolymerizing first norbornene monomers corresponding to a first monomer unit represented by a formula (2) and second norbornene monomers corresponding to a second monomer unit represented by a formula (3) in a presence of the catalyst. The transition metal complex is preferably (π-allyl)2-[N-(2,6-diisopropylphenyl)iminomethyl]phenolate}palladium, (π-allyl)2-[N-(2,6-diisopropylphenyl)iminomethyl]-4-fluorophenolate}palladium, (π-allyl)[2-(N-phenyliminomethyl)phenolate]palladium or (π-allyl)2-[N-(2,6-diisopropylphenyl)iminomethyl]-6-methylphenolate}palladium.
US8598288B2
申请人:——
公开号:US8598288B2
公开(公告)日:2013-12-03
[EN] CATALYST FOR POLYMERIZING NORBORNENE MONOMERS AND A METHOD FOR PRODUCING NORBORNENE POLYMER<br/>[FR] CATALYSEUR DE POLYMÉRISATION DE MONOMÈRES DE NORBORNÈNE ET PROCÉDÉ DE PRODUCTION DE POLYMÈRE DE NORBORNÈNE
申请人:SHOWA DENKO KK
公开号:WO2012033227A2
公开(公告)日:2012-03-15
The invention relates to a catalyst for the polymerization of norbornene monomers containing transition metal complex (A) represented by formula (1); and a method for producing norbornene copolymers containing a monomer unit represented by formulae (2) and (3). Transition metal complex (A) is preferably (Π-allyl) 2- [N- (2,6-diisopropylphenyl ) iminomethyl ] phenolate } palladium, (Π-allyl) 2 - [N- (2, 6-diisopropylphenyl) iminomethyl] -4-fluorophenolate } palladium, (Π-allyl) [2-(N-phenyliminomethyl ) phenolate] palladium and (Π-allyl ) 2- [N-(2, 6-diisopropylphenyl ) iminomethyl] -6-methylphenolate }palladium.