QUINOLINE QUATERNAR SALTS AND THEIR PREPARATION PROCESS

QUINOLINE QUATERNAR SALTS AND THEIR PREPARATION PROCESS

New quaternary quinoline salts are prepd. by treating quinoline with monohalogenic acid (or its esters), with polyalkylene-glycol (170-600 M wt.) in water for 38 hrs. at reflux temp. This is followed by modification of the anion of the quaternary ammonium salt, via a reaction with sodium phenoxide o...

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Bibliographische Detailangaben
Hauptverfasser: DEMIAN NELLY, RO, TOMESCU MARGARETA, IONESCU MAGDALENA, VISAN SANDA, CRETU STELIANA
Format: Patent
Sprache:eng ; rum
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Zusammenfassung:New quaternary quinoline salts are prepd. by treating quinoline with monohalogenic acid (or its esters), with polyalkylene-glycol (170-600 M wt.) in water for 38 hrs. at reflux temp. This is followed by modification of the anion of the quaternary ammonium salt, via a reaction with sodium phenoxide or sodium-alkyl-(8C-9C)- phenoxide, in water or alcohol at 85-105 deg.C. Cpds. have formula (I) A is H or a polyoxy-alkylene-glycol radical of 170-600 M.wt., and X+- (II) or alkyl-(8-9C)-phenoxide gp. These cpds. are efficient corrosion inhibitors (to 94-99%) in a medium of 10% HCl for OLC 38 or OLC-45 or respectively in a medium of 17% H2SO4 during 6-360 hrs. exposure at 25 deg.C. Inhibitor concn: 0.05-0.1%.