Process for the production of 2,3-cycloalkenopyridines

Details Process for the production of 2,3-cycloalkenopyridines Process for the production of 2,3-cycloalkenopyridines

1977-09-06

1982-06-01

Springer, David B.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546152, 546112, 546250, C07D21504, C07D22104

Patent

active

043329403

ABSTRACT:
2,3-Cycloalkenopyridines of the formula ##STR1## are prepared by reacting a cycloalkanone or cycloalkenone of the formula ##STR2## with an oxo compound of the formula ##STR3## where Z is an aliphatic carbon chain which is unsubstituted or has hydrocarbon substituents and R.sub.1, R.sub.2 and R.sub.3 are hydrogen or lower alkyl groups and ammonia in the presence of a dehydrating and dehydrogenating catalyst at a temperature of about 250.degree. to 550.degree. C.

REFERENCES:
patent: 3898179 (1977-08-01), Beschke et al.
patent: 3917542 (1975-11-01), Beschke et al.
patent: 3960766 (1976-06-01), Beschke et al.
patent: 4171444 (1979-10-01), Beschke et al.
patent: 4171445 (1979-10-01), Beschke et al.
patent: 4175195 (1979-11-01), Beschke et al.
patent: 4179576 (1979-12-01), Miyake et al.
Breitmaier et al., "Tetrahedron Letters", No. 38 (1970), pp. 3291-3294.
Klingsberg Pyridine and Its Derivatives, Part One, Interscience, N.Y., pp. 498-500; 508 (1960).

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