(N-Arylaminomethyl)pyridine-N-oxides: Synthesis and characterization of potential ligand systems and the formation of their N,O-chelate aluminum complexes
摘要:
Pyridine-N-oxide-2-carbaldehyde (4a) was converted to the corresponding imine (5a) by treatment with 2,6-diisopropylaniline. Subsequent reduction with a sodium borohydride gave the corresponding ( N-arylaminomethyl) pyridine-N-oxide derivative (6a). A series of analogous compounds was prepared starting from the respective ( aldimino) quinoline-N-oxide ( 4b) or ( ketimino) pyridine-N-oxide ( 10) systems. Deprotonation of the ( aminomethyl) pyridine-N-oxides resulted in a series of unexpected reactions, such as coupling, internal redox reactions or fragmentation. Eventually, the N,O-chelate aluminum complexes ( 22, 23) derived from the ( aminoethyl) pyridine-N-oxide ligand systems could be obtained by treatment of the respective iminopyridine-N-oxides with trimethylaluminum. Many products were characterized by X-ray diffraction. (C) 2008 Elsevier B. V. All rights reserved.
IRIDIUM CONTAINING HYDROSILYLATION CATALYSTS AND COMPOSITIONS CONTAINING THE CATALYSTS
申请人:Dow Corning Corporation
公开号:EP2758413B1
公开(公告)日:2018-03-07
METHOD FOR PRODUCING POLAR GROUP-CONTAINING OLEFIN COPOLYMERS
申请人:Okumura Yoshikuni
公开号:US20130165607A1
公开(公告)日:2013-06-27
The present invention relates to a method of producing a polymer in the method for producing a copolymer of olefin and a polar group-containing monomer represented by formula (1):
C(R
1
)
2
═C(R
1
)(C(R
1
)
2
)
n
R
2
(1)
(in the formula, the symbols have the same meanings as described in the description), the method comprising using a complex of a metal in Group 10 of the periodic table as a catalyst; and supplying a catalyst solution separated from a polymer after the polymerization reaction to a polymerization reaction system to recycle and re-use the catalyst. The production method of the present invention can dramatically reduce the catalyst cost.
Titanium Containing Hydrosilylation Catalysts And Compositions Containing The Catalysts
申请人:Dow Corning Corporation
公开号:US20140182483A1
公开(公告)日:2014-07-03
A composition contains (A) a hydrosilylation reaction catalyst and (B) an aliphatically unsaturated compound having an average, per molecule, of one or more aliphatically unsaturated organic groups capable of undergoing hydrosilylation reaction. The composition is capable of reacting via hydrosilylation reaction to form a reaction product, such as a silane, a gum, a gel, a rubber, or a resin. Ingredient (A) contains a metal-ligand complex that can be prepared by a method including reacting a metal precursor and a ligand.
Nickel Containing Hydrosilylation Catalysts and Compositions Containing the Catalysts
申请人:DOW CORNING CORPORATION
公开号:US20140183398A1
公开(公告)日:2014-07-03
A composition contains (A) a hydrosilylation reaction catalyst and (B) an aliphatically unsaturated compound having an average, per molecule, of one or more aliphatically unsaturated organic groups capable of undergoing hydrosilylation reaction. The composition is capable of reacting via hydrosilylation reaction to form a reaction product, such as a silane, a gum, a gel, a rubber, or a resin. Ingredient (A) contains a metal-ligand complex that can be prepared by a method including reacting a metal precursor and a ligand,
Iridium Containing Hydrosilylation Catalysts and Compositions Containing the Catalysts
申请人:Dow Corning Corporation
公开号:US20140206869A1
公开(公告)日:2014-07-24
A composition contains (A) a hydrosilylation reaction catalyst and (B) an aliphatically unsaturated compound having an average, per molecule, of one or more aliphatically unsaturated organic groups capable, of undergoing hydrosilylation reaction. The composition is capable of reacting via hydrosilylation reaction to form a reaction product, such as a silane, a gum, a gel, a rubber, or a resin. Ingredient (A) contains a metal-ligand complex that can be prepared by a method including reacting a metal precursor and a ligand.