OXYGENATED ALIPHATIC COMPOUNDS AND THEIR USE AS INTERMEDIATES IN THE PREPARATION OF 4-HYDROXY-2,5-DIMETHYL-3(2H)-FURANONE

摘要

The compounds of the invention are characterized by formulae (II) and (III) wherein subscript p is the integer 2 or 3 and q can have the value zero or 1, provided that p+q=3. Said compounds are obtained from hex-3-yne-2,5-diol by a method consisting in reacting an ethylenic compound of formula (CH3)2C=C(H)n(CH3)m wherein subscript n is the integer 1 or 2 and m can have the value zero or 1 and wherein n+m=2, with hex-3-yne-2,5-diol, followed by oxydizing the acetylenic ether obtained by means of ruthenium tetroxyde. The compounds of formula (III) can be used as intermediates in the preparation of 4-hydroxy-2,5-dimethyl-3(2H)-furanone (Furaneol3).