Patent ID: 9290470
Filing Date: 2016-03-22
CPC Classification: C07C,C07D,C10M,C10N,C11C

Claim Text:
1. A process for the preparation of compounds of formula 1 comprising acyloxy compounds of formula A and epoxy compounds of formula B, wherein the process comprises the steps of: a. Stirring Karanja oil with formic acid and concentrated sulphuric acid at a temperature ranging between 15-20° C. followed by the addition of 30% hydrogen peroxide at 4-10° C. for a period ranging between 1 to 2 hrs, and then stirring the contents at 50-70° C. for a period of 1-6 hrs to obtain epoxy compounds of the formula B and further stirring at 80-85° C. for a period of 6-8 hrs to obtain hydroxylated oil; b. optionally, refluxing Karanja oil with an alkali dissolved in an alcohol under stirring for a period ranging between 3-4 hrs at a temperature ranging between 65-70° C. to obtain fatty acid alkyl ester, and further adding formic acid and concentrated sulphuric acid into it, followed by the addition of 30% hydrogen peroxide at 4-15° C. for a period ranging between 1-2 hrs and then stirring the contents at 50-70° C. for a period of 1-5 hrs to obtain epoxy compounds of the formula B and further stirring at 80-85° C. for a period of 6-8 hrs to obtain hydroxylated fatty acid alkyl ester; c. acylating the hydroxylated oil as obtained in step (a) or the hydroxylated fatty acid alkyl ester as obtained in step (b) with acid anhydrides in the presence of dimethyl amino pyridine (DMAP) taken in a water azeotrope forming solvent at a temperature of 140-150° C. for a period ranging between 7-9 hrs to obtain the acyloxy compounds of formula A.