| 摘要 |
<p>1,188,275. Unsaturated esters preparation. MOBIL OIL CORP. 30 Jan., 1969 [22 March, 1968], No. 5528/69. Heading C2C. Ethylenically unsaturated esters are prepared by contacting in the vapour phase a methyl ester of a C 3-5 alkanoic acid having at least one hydrogen atom on each of theα- and #-carbon atoms and a molecular oxygen-containing gas with a catalyst comprising gold metal.</p> |
