Abstract: The isomerization of Comus wilsoniana fruit oil by the catalysts such as I₂, RuCI₃ and alkaline were studied. The mechanism of isolated double bonds to conjugated double bonds was discussed. The constituents of isomerized products were also analyzed by the methods of UV, GC, GC-IR, GC-MS.It has been found that the catalysts had the most important effect on the configuration of isomerized products.The conjugated configurations by the alkaline catalyst were cis-trans, and the conjugated configurations were both cis-trans and trans-trans by I₂ and RuCl₃, meanwhile the proportion of both configurations was 1:1.

Key words: Comus wilsoniana fruit oil, catalysis isomerization, conjugationion