Ethynylation process

Details Ethynylation process Ethynylation process

2005-09-27

2005-09-27

Price, Elvis O. (Department: 1621)

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

Organic compounds

Oxygen containing

C568S873000

Reexamination Certificate

active

06949685

ABSTRACT:
A process for the manufacture of an acetylenically unsaturated alcohol comprising reacting formaldehyde, an aldehyde or a ketone (a carbonyl compound) with acetylene in the presence of ammonia and a strongly basic macroporous anion exchange resin, the latter preferably featuring a polystyrene matrix and quaternary ammonium groups, preferably of type I or Type II. The reaction products, which depending on the starting carbonyl compound are propargyl alcohol or 1-monosubstituted or 1,1-disubstituted derivatives thereof, are of use as intermediates in the synthesis of many useful end products, inter alia in the field of vitamins and carotenoids.

REFERENCES:
patent: 3801653 (1974-04-01), Pasedach et al.
patent: 2 018 971 (1971-11-01), None
patent: 0 982 282 (2000-03-01), None

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