Substituted pyridazin-3-one compounds

Details Substituted pyridazin-3-one compounds Substituted pyridazin-3-one compounds

1999-03-12

2000-07-25

Bernhardt, Emily

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

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

504238, C07D23714

Patent

active

060938188

ABSTRACT:
4-Methylpridazin-3-one compounds of the formula: ##STR1## [wherein, X represents a hydrogen or fluorine atom, and Y represents a hydrogen atom, C.sub.1 -C.sub.6 alkoxy, C.sub.3 -C.sub.6 alkoxy or C.sub.3 -C.sub.6 alkyloxy group] are produced by reacting 4-cyanopyridazin-3-one compounds of the formula: ##STR2## with a methylating agent. Therefore, the above 4-cyanopyridazin-3-one compounds are useful for producing the above herbicidal 4-methylpyridazin-3-one compounds as intermediates.

REFERENCES:
patent: 5506228 (1996-04-01), Norton et al.
E. Sotelo et al., "Synthesis of Polyfunctional Pyridazine Derivatives Using a Solvent-Free Microwave Assisted Method", Synthetic Communications, vol. 27, No. 14, 1997, pp. 2419-2423.
M. Elnagdi et al., "Studies with Heteroaromatic Aza Compounds: A Novel Synthesis of Phthalazines", Liebigs Ann. Chem., 1988, pp. 1005-1006.
S. Patai, "The Chemistry of the Cyano Group", Interscience, London XP-002106128, 1970, p. 280.

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