| 摘要 |
PURPOSE:To produce a l-indanone compound useful e.g. as a starting substance for an olefin polymerization catalyst by a single-stage reaction in high yield by reacting a specific benzene derivative with a methacrylic acid halide in the presence of a Lewis acid or a strong acid. CONSTITUTION:A 1-indanone compound of formula Ia and/or formula Ib is produced by reacting a compound of formula II [R<1> to R<4> are each H, a halogen, a 1-20C (halogenated)hydrocarbon group, a silicon-containing group, an oxygen- containing group, an S-containing group, an N-containing group or a P- containing group or adjacent groups are bonded with each other to form a ring] with a compound of formula III (R<5> is same as R<1> to R<4>; X is a halogen) in the presence of a Lewis acid or a strong acid. The Lewis acid is preferably aluminum trichloride, tin tetrachloride, etc., and the strong acid is preferably trifluoromethanesulfonic acid, hydrogen fluoride, etc. The compound of formula II is e.g. p-cymene and the compound of formula Ia or formula Ib is e.g. 2,4- dimethyl-7-isopropyl-1-indanone or 2,7-dimethyl-4-isopropyl-1-indanone. |
