PROCESS FOR THE PREPARATION OF 4-HYDROXY-2,5-ALKYL-3-OXO-2H-FURANS AND 2-CARBALKOXY-FURAN DERIVATIVES EMPLOYED AS INTERMEDIATES IN THE PROCESS

摘要

A novel technique for the preparation of 4-hydroxy-5-alkyl-3-oxo-2H-furans is disclosed wherein the reaction product of an alpha-alkyl diglycolic acid diester and an oxalic acid diester is cyclized, hydrolyzed and decarboxylated. Alternatively, the corresponding 2,5-dialkyl product can be prepared by an intermediate alkylation step.