Process for preparing certain pyridine 2,3,6-triones

Details Process for preparing certain pyridine 2,3,6-triones Process for preparing certain pyridine 2,3,6-triones

1981-02-26

1982-06-15

Rotman, Alan L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546316, 430392, C07D21356, C07D21357

Patent

active

043352456

ABSTRACT:
New silver dye-bleach catalysts and the process for their manufacture are provided. These compounds have the general formula ##STR1## wherein A is an electron-withdrawing group and R.sub.1 and R.sub.2 are hydrogen, optionally substituted alkyl or optionally substituted aryl.

REFERENCES:
patent: 4182886 (1980-01-01), Kitzing et al.
March, Advanced Organic Chemistry, Second Edition, p. 247, McGraw-Hill Pub. (1979).
Klingsberg, Pyridine and its Derivatives, Part Three, pp. 595-596, Interscience Pub. (1962).
Klingsberg, Pyridine and its Derivatives, Part Two, p. 482, Interscience Pub., (1961).

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