Patent ID: 9434660
Filing Date: 2016-09-06
CPC Classification: C07B,C07C,C07F

Claim Text:
1. A method for synthesis of lycopenes which comprises obtaining a C15-Wittig salt cis/trans mixture; purifying the C15-Wittig salt cis/trans mixture to remove solvents; adding an aprotic solvent comprising acetone to the C15 Wittig salt cis/trans mixture to extract 6Z-C15-Wittig salts from the mixture; removing the 6Z-C15-Wittig salts from the mixture to obtain residues; purifying the obtained residues to obtain C15-Wittig salts with high all-E contents; and reacting said obtained C15-Wittig salts with a C10-dialdehyde in a double-Wittig reaction in the presence of a base reactant to obtain said lycopenes.