Process for the preparation of 2-(5,5-disubstituted-4-oxo-2-imid

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

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546278, 546112, 546183, 548302, 548322, C07D40104

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active

045187800

ABSTRACT:
A novel process for the preparation of 2-(5,5-disubstituted-4-oxoor thiono)-2-imidazolin-2-yl)nicotinic acids, quinoline-3-carboxylic acids and benzoic acids by the base-catalyzed cyclization of appropriately substituted 2-carbamoyl nicotinic acids, 3-quinolinecarboxylic, or benzoic acids. The products are useful as herbicides.

REFERENCES:
patent: 4017510 (1977-04-01), Los
Beilstein's Handbuch, vol. 22, pp. 150-151 (1935).
Wagner et al., Synthetic Org. Chem., Wiley, (1953), p. 570.
Hoffman, Imidazole and its Derivatives--Part I, Interscience (1953), pp. 95, 98 and 99.
Noller, Org. Synthesis, Coll. vol. II, p. 586, (1943).
West, J. Am. Chem. Soc., vol. 42, p. 1662 (1920).

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