CERTAIN 2 6-DICHLORO-3 5-PYRIDINEDICARBONITRILES

1,240,422. Dicyanopyridines. MERCK PATENT G.m.b.H. 23 Feb.,1970 [22 Feb., 1969], No. 8643/70. Heading C2C. [Also in Division A5] Compounds of formula Wherein X is O-O, -NH- or -S- and R is hydrogen, halogen, -NO 2 , -SO 3 H, C 1-8 acyl or -NR1R2 in which each of R1 and R2 is hydrogen, C 1 _ 8 acycli...

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Bibliographic Details
Main Authors JOACHIM GANTE, SIGMUND LUST
Format Patent
LanguageEnglish
Published 21.12.1971
Subjects
AGRICULTURE
ANIMAL HUSBANDRY
BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES
CHEMISTRY
FISHING
FORESTRY
HETEROCYCLIC COMPOUNDS
HUMAN NECESSITIES
HUNTING
METALLURGY
ORGANIC CHEMISTRY
PEST REPELLANTS OR ATTRACTANTS
PLANT GROWTH REGULATORS
PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF
TRAPPING
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Summary:1,240,422. Dicyanopyridines. MERCK PATENT G.m.b.H. 23 Feb.,1970 [22 Feb., 1969], No. 8643/70. Heading C2C. [Also in Division A5] Compounds of formula Wherein X is O-O, -NH- or -S- and R is hydrogen, halogen, -NO 2 , -SO 3 H, C 1-8 acyl or -NR1R2 in which each of R1 and R2 is hydrogen, C 1 _ 8 acyclic hydrocarbon or C 1 _ 8 acyl, are prepared by (a) chlorination of a compound of formula wherein R1 is hydrogen or an alkali or alkaline earth metal equivalent, or (b) interconversion of the substituents R by halogenation, sulphonation, acylation, nitration and reduction of nitro to amino followed by optional N-acylation or other N-substitution. The products have pesticidal activity (see Division A5). Starting materials of the second formula above are prepared by reaction of a compound of formula with cyanacetamide under alkaline conditions.
Bibliography:Application Number: USD3629270