申请人:MITSUBISHI GAS CHEMICAL COMPANY, INC.
公开号:EP0362507A2
公开(公告)日:1990-04-11
A process for production of 2,6-dimethylnaphthalene is disclosed, comprising the steps: (1) an acylation step where p-tolyl sec-butyl ketone is produced from toluene, n-butene and carbon monoxide: (2) a hydrogenation step where the carbonyl group of the p-tolyl sec-butyl ketone is hydrogenated: and (3) a dehydrogenation and cyclization step where the hydrogenated product obtained above is subjected to dehydrogenation and cyclization to produce the desired 2,6-dimethylnaphthalene. The process enables efficiently producing a high quality or high purity 2,6-dimethylnaphthalene.
本发明公开了一种生产 2,6-二甲基萘的工艺,包括以下步骤(1) 从甲苯、正丁烯和一氧化碳制取对甲苯基仲丁基酮的酰化步骤:(2) 对对甲苯基仲丁基酮的羰基进行氢化的氢化步骤:(3) 上述氢化产物进行脱氢和环化以生产所需的 2,6-二甲基萘的脱氢和环化步骤。该工艺可高效生产高质量或高纯度的 2,6-二甲基萘。