发明授权
EP0844995B1 PREPARATION OF ALPHA-TOCOPHEROL 失效
生产α-生育酚

PREPARATION OF ALPHA-TOCOPHEROL
摘要:
Disclosed is an improved process for the preparation of alpha-tocopherol by the hydroxymethylation followed by the hydrogenation of non-α-tocopherols comprising β-, η-, and δ-tocopherols using a particular palladium on alumina catalyst wherein (1) the dispersion and depth of deposition of the palladium metal are within certain ranges, and (2) the alumina is of a particular crystalline phase.
信息查询
0/0