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
描述了在C-5具有单,二和三氯甲基的氯化的5-羟基呋喃酮的合成。通过乙酰丙酸的氯化,然后三乙胺促进的氯化氢消除,获得了5-氯甲基羟基呋喃酮。氯化4-环戊烯-1,3-二酮的水解产生5-二氯甲基羟基呋喃酮。通过三氯乙酸钠的热分解将三氯甲基结合到马来酸酐中。