Hoechst Celanese Corporation

Celanese Gmbh

Donald R Larkin

Werner H Mueller

Frank B Gupton

Varadaraj Elango

John C Saukaitis

John R Fritch

Michael P Bodman

The present invention pertains to a method of preparing substituted and unsubstituted N-hydroxy-2-aminobutane diacid derivatives which can be dehydrated to 2-aminobut-2-ene dioic acid derivatives, which can be subsequently converted to pyridine and quinoline derivatives.

Process for preparing pyridine and quinoline derivatives

The present invention pertains to a method of preparing substituted and unsubstituted N-hydroxy-2-aminobutane diacid derivatives. The invention also pertains to the use of N-hydroxy-2-aminoethane derivatives (including the N-hydroxy-2-aminobutane diacid derivatives) in the preparation of pyridine derivatives.

Process for preparing pyridinecarboxylic acid derivatives

A liquid contaminated with a carbonyl compound, especially an aldehyde, is purified by being contacted with a bed of solid polyvinyl alcohol particles or fibers. The carbonyl compound is adsorbed or chemisorbed onto the solid polyvinyl alcohol surface with resulting reaction in the carbonyl content of the liquid.

Purification of materials containing carbonyl contaminants

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Corpus Christi, TX, United States of America

Donald R Larkin