Process of performing cyclization reactions using benzyl or pyri

Details Process of performing cyclization reactions using benzyl or pyri Process of performing cyclization reactions using benzyl or pyri

1976-10-01

1978-03-14

Daus, Donald G.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260287AN, 260295N, C07D21556, C07D47104

Patent

active

040790584

ABSTRACT:
Process of producing a naphthyridine or quinoline compound of the formula: ##STR1## wherein R.sub.2, R.sub.3, R.sub.4, and R.sub.6 can be alkyl, and R.sub.1 is nitrogen or CH. The corresponding pyridyl- or phenylaminomethylenemalonic acid diester is cyclized to yield said compound and an alcohol. The malonic acid diester at below reaction temperature is added to a solvent, e.g., diphenyl benzene, at above reaction temperature in proportion so that the mixture attains reaction temperature. Good yields at high throughputs are achieved.

REFERENCES:
patent: 3761482 (1973-09-01), Nakagome et al.
Lappin, "J. Am. Chem. Soc." 70, (1948), 3348.

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