| abstract |
The essence of the solution is a mixed acid esternsuccinic with 1- (2,2-dimethyl-2H-chromem-6-yl) -1-n-alkanol and 5,9,13-trimethyl-4-6-tetradecadiene-n-3-ol, and its 13-hydroxy-, 13-alkoxy, respectivelyn13-aralkoxycarbonylalkylcarboxy derivativenWHATn, ch3nch3nR 1 -CH 2 -CO-CH 2 -CH 2 -CO-O-R 2nProcess for preparing a mixed acid esternsuccinic is the reaction of a monoester derivativenin reaction with alcohol in the presencencatalytic amount of 4-dimethylaminopyridinenand dicyclohexylcarbodiimide in an anhydrous mediumndiethyl ether at 15-25 ° C. |