| abstract |
(57) [Summary] [Objective] To provide a simple method for producing a compound useful as a synthetic intermediate for a quinolone synthetic antibacterial drug. ## STR1 ## Formula (I): The compound represented by the formula (II) is hydrolyzed using formic acid or a salt thereof as a hydrogen source. (Wherein R 1 represents a hydrogen atom or a tertiary butoxycarbonyl group, R 2 represents a hydrogen atom or a methyl group, and n is an integer 2 or 3. ). |