| abstract |
A method of converting (Z)-1-(3,5-disubstituted phenyl)-2-(4-substituted phenyl)ethene of general formula (II) to (E)-1-(3,5-disubstituted phenyl)-2-(4-substituted phenyl)ethene of general formula (I) n n nwherein R 1 , R 2 , and R 3 are the same or different and independently represent (C 1 -C 4 )alkyl, (C 1 -C 4 )alkoxy(C 1 -C 4 )alkyl, (C 1 -C 4 )alkoxy(C 1 -C 4 )alkoxy(C 1 -C 4 )alkyl, allyl, vinyl, silyl, formyl, acyl, aryl(C 1 -C 4 )alkyl or substituted aryl(C 1 -C 4 )alkyl group. The present invention also provides a process for the conversion of (E)-(3,5-disubstituted phenyl-2-(4-substituted phenyl)ethene of general formula (I) to E-resveratrol of formula (III). |