Platinum-Catalyzed Assembly of Quinaldine from Aniline and Ethylene
作者:Aurélien Béthegnies、Pavel A. Dub、Rinaldo Poli
DOI:10.1021/om400020k
日期:2013.3.25
The selectivity of the catalytic reaction between aniline and ethylene in the presence of the Brunet catalyst (PtBr2/Br–) shifts from the hydroamination product N-ethylaniline to the heterocyclization product 2-methylquinoline (quinaldine) when conducted in the presence of PPh3 (1 equiv per Pt atom). Condition optimization revealed that this process works best in the absence of any halide salt additive
The present invention relates to pharmaceutical compositions and combinations for treating, preventing or managing pulmonary hypertension comprising small molecule heterocyclic pharmaceuticals, and more particularly, substituted pyridines and pyridazines optionally combined with at least one additional therapeutic agent.
A novel process is described which allows N-isopropyl(meth)acrylamide to be obtained in high purity and yield in a simple manner, by reacting methacrylic anhydride with isopropylamine, optionally in a solvent.
Method and compositions for inhibiting polymerization of acrylic acid monomers
申请人:BETZ EUROPE, INC.
公开号:EP0398633A1
公开(公告)日:1990-11-22
A method of inhibiting acid monomer (as hereinbefore defined) polymerization comprising adding to the monomer (a) a manganese source compound and (b) a phenylenediamine compound having at least one N-H bond therein.
Acrylic acid (as hereinbefore defined) anti-polymerization composition comprising a liquid carrier and dissolved or dispersed therein (a) a manganese source compound and (b) a phenylenediamine compound having at least one N-H bond therein.
Oxidative stability of gasoline mixtures is improved by adding to the gasoline a phenylenediamine compound (I) in combination with a strongly basic organo-amine compound (II). The compound (II) may comprise hydroxylamines, alkylphenol-polyamine-formaldehyde Mannich reaction products, polyethylene-polyamines, and members of the group of piperazine, aminoalkyl substituted piperazine and amino substituted alicyclic alkanes.