Chemistry Letters, Vol.30, No.3, 252-253, 2001
Direct observation of 2-(1-methoxycarbonylnaphthyl)methyl radical via photo-Claisen type rearrangement
The photo-Claisen type rearrangement of 2-(1-methoxycarbonylnaphthyl)methyl phenyl ether derivatives 1a-f was investigated. The 2-( 1-methoxycarbonylnaphthyl)methyl radical and its fluorescence by use of two colored laser flash photolysis (LFP) technique were directly observed as a reactive intermediate. The reactivity of the photorearrangement depended on the p-substituents on the phenoxy group.