| 摘要 |
<p>A process for the preparation of oxalate esters by reacting an alcohol with a mixture of carbon monoxide and oxygen in the presence of a catalytic mixture of:a) a palladium, rhodium, platinum, copper or cadmium metal salt compound or mixture thereof,b) an aliphatic, cycloaliphatic, aromatic or heterocyclic amine or ammonia,c) a copper (I), copper (II), iron (II) or iron (III) oxidant salt compound, andd) an ammonium or substituted ammonium salt compound or acid with a counterion other than a halide. Alternatively a ligand or coordination complex compound of the metal salt compound may be employed.</p> |
