Process for the preparation of a cosmetic active

Details Process for the preparation of a cosmetic active Process for the preparation of a cosmetic active

2005-06-28

2005-06-28

Shippen, Michael L. (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C568S766000

Reexamination Certificate

active

06911562

ABSTRACT:
A process for the preparation of a compound of formula I:wherein R is a hydrogen or a C1-6alkyl group which is straight chain, branched or cyclic, with or without an oxygen, nitrogen or sulphur heteroatom anywhere in the chain or ring by reactinga compound of formula II:with a source of hydrogen selected from either hydrogen or water in the presence of a mixture of at least two catalysts selected from nickel, raney nickel, and palladium, at a pH below 7.0 in a solvent medium comprising an alcohol having a carbon chain length of up to 3.

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International Search Report, PCT/EP2004/006980, mailed on Dec. 22, 2004-3 pp.

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