http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0551831-A1

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filingDate 1993-01-07-04:00^^<http://www.w3.org/2001/XMLSchema#date>
inventor http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_64d1dd39b7b0032107f4b46689dcbd4b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ed815fa91e64e3304aa5b78a37be9964
publicationDate 1993-07-21-04:00^^<http://www.w3.org/2001/XMLSchema#date>
publicationNumber EP-0551831-A1
titleOfInvention Process for the preparation of substituted pyridines 2-cyanopyridines
abstract R¹ H, Alkyl, Alkenyl, Alkinyl, Haloalkyl, Alkoxycarbonyl, Alkoxyalkyl, Phenyl, Benzyl, Phenoxyalkyl bedeutet, wobei die drei letztgenannten Reste im Phenylteil substituiert sein können; R² H, Alkyl, Alkenyl, Alkinyl, Haloalkyl oder Alkoxycarbonyl bedeutet; R³ H, Alkyl, Alkenyl, Alkinyl, Haloalkyl, Alkoxycarbonyl, Phenyl, Phenoxy, Benzyl, wobei die drei letztgenannten Reste substituiert sein können, oder Alkoxy bedeutet; und R⁴ H, Alkyl, Alkenyl, Alkinyl, Haloalkyl oder Alkoxycarbonyl bedeutet; odern R¹ gemeinsam mit R² für eine gesättigte Kette steht und die übrigen Reste wie oben definiert sind; odern R¹ gemeinsam mit R² für eine Kette der Formel -CH=CH-CH=CH- steht, welche substituiert sein kann und die übrigen Reste wie oben definiert sind; odern R³ gemeinsam mit R⁴ für eine Kette der Formel -CH=CH-CH=CH- steht, welche substituiert sein kann und die übrigen Reste wie oben definiert sind; sind wertvolle Zwischenprodukte bei der Herstellung von Arzneimitteln und Pflanzenschutzmitteln.Compounds of the general formula I wherein R¹ Is H, alkyl, alkenyl, alkynyl, haloalkyl, alkoxycarbonyl, alkoxyalkyl, phenyl, benzyl, phenoxyalkyl, it being possible for the latter three radicals to be substituted in the phenyl part; R² Represents H, alkyl, alkenyl, alkynyl, haloalkyl or alkoxycarbonyl; R³ H, alkyl, alkenyl, alkynyl, haloalkyl, alkoxycarbonyl, phenyl, phenoxy, benzyl, where the latter three radicals can be substituted, or alkoxy; and R⁴ Represents H, alkyl, alkenyl, alkynyl, haloalkyl or alkoxycarbonyl; or R¹ together with R² represents a saturated chain and the remaining radicals are as defined above; or R¹ together with R² stands for a chain of the formula -CH = CH-CH = CH-, which can be substituted and the remaining radicals are as defined above; or R³ together with R⁴ stands for a chain of the formula -CH = CH-CH = CH-, which can be substituted and the remaining radicals are as defined above; are valuable intermediates in the manufacture of pharmaceuticals and pesticides.n n n R¹ bis R⁴ die gleiche Bedeutung wie in Formel I haben und R⁵ Alkyl, Alkenyl, Alkinyl, Benzyl oder Trialkylsilyl bedeutet und X eine Abgangsgruppe bedeutet; mit einem Cyanid der allgemeinen Formel III n n n n        M(CN) m    (III), n n n nin welchern M Alkali, Erdalkali oder Kupfer bedeutet und m 1 oder 2 ist, in einem polaren aprotischen Lösungsmittel oder Lösungsmittelgemisch miteinander umsetzt.In the process according to the invention, compounds of the formula I are obtained by using a substituted 1-alkoxypyridinium salt of the general formula II in which R¹ to R⁴ have the same meaning as in formula I and R⁵ Alkyl, alkenyl, alkynyl, benzyl or trialkylsilyl means and X means a leaving group; with a cyanide of the general formula III M (CN) m (III), in which M Alkali, alkaline earth or copper means and m Is 1 or 2, reacted with one another in a polar aprotic solvent or solvent mixture.
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priorityDate 1992-01-15-04:00^^<http://www.w3.org/2001/XMLSchema#date>
type http://data.epo.org/linked-data/def/patent/Publication

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Total number of triples: 44.