Curcumin synthesis

Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing

Reexamination Certificate

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C568S325000

Reexamination Certificate

active

07964755

ABSTRACT:
Process for the preparation of curcumin by condensation of vanillin with acetylacetone in the presence of boric acid and an aliphatic or araliphatic amine in a highly polar, aprotic solvent, under concomitant removal of water.

REFERENCES:
patent: 3194841 (1965-07-01), Alphen et al.
patent: 5679864 (1997-10-01), Krackov et al.
patent: 97/16403 (1997-05-01), None
International Search Report for PCT/EP2007/002403, mailed Jun. 18, 2007.

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