PROCESS FOR PREPARING OXALIC ACID DIESTERS

• Main Authors: HARUHIKO MIYAZAKI, KATSURO MASUNAGA, HIROSHI YANAGISAWA, YASUSHI SHIOMI, SATORU FUJITUS
• Format: Patent
• Language: English
• Published: 29.12.1982
• Edition: 3
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; AMMONIA; APPARATUS THEREFOR; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS THEREOF; CYANOGEN; GENERAL METHODS OF ORGANIC CHEMISTRY; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

PURPOSE:To prepare the titled compound useful as a raw material of oxalic acid, dye intermediate, pharmaceuticals, etc., in high yield and selectivity, by the vapor-phase catalytic reaction of carbon monoxide with a nitrous acid ester in the presence of a platinum-group metal catalyst supported on a...