WERKWIJZE VOOR DE BEREIDING VAN 4-HYDROXY-5- -ALKYL- EN 4-HYDROXY-2,5-DIALKYL-3-OXO-2H- -FURANEN.

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.