Preparation of unsaturated ketones from acetone and paraformalde

Details Preparation of unsaturated ketones from acetone and paraformalde Preparation of unsaturated ketones from acetone and paraformalde

1990-04-13

1991-04-02

Reamer, James H.

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

Organic compounds

Oxygen containing

568388, 568345, 568313, C07C 4545

Patent

active

050048392

ABSTRACT:
Unsaturated ketones are produced from ketones and paraformadehyde under mild reaction conditions utilizing a catalyst comprising a halogen acid salt of a secondary amine and a nonsoluble solid oxide of an element selected from groups IB, IIIA, IVA, IVB, VA, VB, VIB and VIII of the periodic table. Temperatures of 120-150 and pressures of 700-1200 kpa are preferred; by-products may include di-unsaturated ketones such as divinyl ketone. Unsaturated ketones such as methyl vinyl ketone are useful in imparting ultraviolet sensitivity to plastics which enhances degradability.

REFERENCES:
patent: 2064564 (1936-12-01), Quattlebaum, Jr.
patent: 2245567 (1941-06-01), Brant et al.
patent: 2278638 (1942-04-01), Barnes
patent: 2309727 (1943-02-01), Barnes
patent: 2451351 (1948-10-01), Mottern et al.
patent: 2462031 (1949-02-01), Wittcoff
patent: 2549508 (1951-04-01), Mottern
patent: 3578702 (1971-05-01), Snapp, Jr. et al.
patent: 3592856 (1971-07-01), Offenhauer et al.
patent: 3928457 (1975-12-01), Ember
patent: 3928458 (1975-12-01), Hagemeyer, Jr. et al.
patent: 4005147 (1977-01-01), Fischer et al.
patent: 4035395 (1977-07-01), Stetter et al.
patent: 4355184 (1982-10-01), Kaku et al.
patent: 4374274 (1983-02-01), Heilen et al.
Ai, Chem. Abst., vol. 108, 190 111,495h (1988).
Zhang et al., Chem. Abst., vol. 109, #189, 797 (1988).
Zhang et al., Chem. Abst., vol., 110 #56784r (1989).
Hays et al., "Condensation of Formaldehyde with Compounds Containing Activated Hydrogens", J. Am. Chem. Soc., vol. 73, pp. 5369-5373 (Nov., 1951).

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