Patent ID: 6384246
Filing Date: 2002-05-07
Classification: C07D

Abstract:
A process for the preparation of maltol of formula (1) from plants belonging to the genus Abies, said process comprising: (a) extracting the dried and pulverized parts of the plant with an alcohol at 20-40Â° C. and concentrating the solvent to obtain an alcoholic extract, (b) adsorbing the alcoholic extract with an adsorbent and drying the adsorbed material at a temperature ranging from 20-50Â° C. for 4-12 hours, (c) extracting the adsorbed material with an aliphatic solvent and then with a chlorinated solvent successively, (d) concentrating the chlorinated solvent to a residue and crystallizing it from a suitable organic solvent or mixtures of such solvents to get pure maltol.