| 摘要 |
A process for industrially producing a ketone compound for use as a catalyst in the production of an optically active phenylglycidic acid derivative and for producing a hydroxylactone compound as a precursor for the ketone compound, which comprises subjecting an epoxy compound (I) or a salt thereof to intramolecular ring closure to produce the hydroxylactone compound (II) or a salt thereof and oxidizing this compound (II) to obtain the corresponding ketone compound. (In the formulae, ring Ar is an optionally substituted mono- to tricyclic aromatic ring; Alk is a single bond or optionally substituted alkylene; Q is CO or SO2; X is O or S; and R<1> is H or lower alkyl). |
