Selective hydrogenation of olefinically unsaturated carbonyl...

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

Reexamination Certificate

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C568S875000, C568S876000, C568S878000, C568S880000, C568S884000, C568S885000, C568S902000, C568S903000, C568S909500

Reexamination Certificate

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06916964

ABSTRACT:
The present invention relates to a continuous process for the selective hydrogenation of olefinically unsaturated carbonyl compounds to give unsaturated alcohols in particular of citral to give a mixture of geraniol and nerol, in a reactor containing a liquid phase, in which at least one catalyst is suspended, and which can additionally contain a gas phase, wherein the liquid phase and, if present, the gas phase are passed through a device in the reactor having openings or channels.

REFERENCES:
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patent: 4320228 (1982-03-01), Horner et al.
patent: 5939589 (1999-08-01), Kaibel et al.
patent: 024 651 (1981-03-01), None
patent: 798 039 (1997-10-01), None
XP-002253580,Jr.Cat.199, 73-84 (2001).
XP-002253581,Jr.Cat. 204, 450-459 (2001).
XP-002253582,Applied Catalysis A: General 196(2000) 93-102.
XP009015172,Research and Industry Bd. 17, Mar. 1972, Sieiten 11-12.
J.CHem. Tech.Biotechnol 1994, 60, 83-88, Neri et al.

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