Synthetic approaches to chlorinated 5-hydroxy-5-methyl-2-furanones
作者:Robert Franzén、Leif Kronberg
DOI:10.1016/s0040-4020(01)80248-9
日期:1993.1
The syntheses of chlorinated 5 - hydroxy- furanones with a mono-, di-, and trichloromethyl group at C-5 are described. The 5-chloromethyl hydroxyfuranones were obtained by chlorination of levulinic acid followed by triethylamine promoted elimination of hydrogen chloride. Hydrolyses of chlorinated 4 - cyclopentene- 1,3 -diones yielded 5-dichloromethyl hydroxyfuranones. The trichloromethyl group was