abstract |
DIALKYL-SUBSTITUTED DERIVATIVES OF ACETALDEHYDE REACT EXOTHERMICALLY WITH GLYOXAL IN THE PRESENCE OF AN AQUEOUS BASE TO FORM BICYCLE FURODIOXOLE RING COMPOUNDS. FOR EXAMPLE, ISOBUTYRALDEHYDE AND GLYOXAL IN THE PRESENCE OF AQUEOUS SODIUM CARBONATE REACT TO FORM TETRAHYDRO-2ISOPROPYL-6,6-DIMETHYLFURO(2,3-D)-1,3-DIOXOL-5-OL. THE BICYCLIC FURODIOXOLES ARE VALUABLE INTERMEDIATES IN THE SYNTHESIS OF POLYOLS, WHICH ARE THEMSELVES USEFUL, FOR EXAMPLE, AS INTERMEDIATES IN THE PREPARATION OF ALKYL RESINS, PLASTICIZERS FOR POLYVINYL CHLORIDE COMPOSITIONS AND AS HUMECTANTS. |