| 摘要 |
PROBLEM TO BE SOLVED: To obtain new compounds of 1-phenyl-4-(1-phenylethyl)tetralins useful as a standard for the analysis of styrene oligomers which are formed in an extremely small amount during a styrene polymerization reaction. SOLUTION: 1S*-Phenyl-4S*-(1R*-phenylethyl)tetralin of formula I. As preferable standard, compounds of formula II to IV are further cited. These compounds are obtained by treating a compound of formula V for 1-10 hr by catalytic hydrogenation in the presence of a catalyst, and subsequently separating and purifying the steric isomers of the obtained product by a high-speed liquid chromatography or the like. |
