Spiroketone process

Details Spiroketone process Spiroketone process

1984-10-15

1985-12-31

Reamer, James H.

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

Organic compounds

Oxygen containing

568315, C07C 4545

Patent

active

045622930

ABSTRACT:
Spiro[5.5]undeca-1,4,8-trien-3-ones are prepared by reacting a phenol having a free p-position with formaldehyde, a nitrogen compound selected from ammonia and primary and secondary amines, and a conjugated diene in an inert solvent at a temperature of at least about 190.degree. C.

REFERENCES:
patent: 2962531 (1960-11-01), Coffield
patent: 3173952 (1965-03-01), Farrer
patent: 3225099 (1965-12-01), Coffield
patent: 4052457 (1977-10-01), Nagakura et al.
patent: 4480133 (1984-10-01), Roper
Hatchard, J.A.C.S., vol. 80, pp. 3640-3642 (1958).
McClure, J. Org. Chem., vol. 27, pp. 2365-2368 (1962).

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