Processes for the production of heterocyclic compounds

Details Processes for the production of heterocyclic compounds Processes for the production of heterocyclic compounds

1976-02-04

1977-08-16

Gallagher, R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

544 54, 544 96, 544 97, 2603067R, 260327M, C07D33906, C07D26322

Patent

active

040425959

ABSTRACT:
A ketonic heterocyclic compound having at least two heteroatoms in the ring is prepared by reacting a difunctional compound having the general formula ##STR1## in which R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are members of the group consisting of aliphatic, aromatic, cycloaliphatic and heterocyclic hydrocarbons which may contain functional groups selected from --OH, --OR.sub.5, --COOH, --COOR.sub.5, --CN, --Cl, --Br, --I, --F, and --CO--R.sub.5, wherein R.sub.5 is an aliphatic, aromatic, cycloaliphatic or heterocyclic hydrocarbon; X is oxygen or sulphur; Y is sulphur or nitrogen; n is an integer ranging from 1 to 3, or zero; R.sub.6 is a hydrogen or a hydrocarbon radical included in the above definition of R.sub.1 R.sub.2 R.sub.3 and R.sub.4 ; and m is the valence of Y, with carbon monoxide and oxygen in the presence of a catalyst selected from selenium, selenium compounds and complexes of copper, in the temperature range of from room temperature to 80.degree. C and in the pressure range of from 1 to 10 atmospheres.

REFERENCES:
patent: 2868801 (1959-01-01), Steele
Mahan, College Chemistry, Addison Wesley, Reading, Mass., 1966, p. 500.

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