1
Glenn R Elion, Arthur E Klink: Preparation of cyanopyridines. Merck & Co, Richard A Thompson, J Jerome Behan, July 20, 1976: US03970657 (6 worldwide citation)

Cyanopyridines are prepared by bringing a reactant stream comprising an alkyl substituted pyridine, ammonia, steam and oxygen into contact with a novel catalyst composition which results in high selectivity to the desired cyanopyridine.


2
Glenn R Elion, Arthur E Klink: Preparation of cyanopyridines. Merck & Co, Richard A Thompson, J Jerome Behan, July 20, 1976: US03970659 (5 worldwide citation)

Cyanopyridines are prepared by bringing a reactant stream comprising an alkyl substituted pyridine, ammonia, steam and oxygen into contact with a novel catalyst composition which results in high selectivity to the desired cyanopyridine.


3
Glenn R Elion, Arthur E Klink: Preparation of cyanopyridines. Merck & Co, Walter Patton, Richard A Thompson, J Jerome Behan, September 21, 1976: US03981879 (1 worldwide citation)

Cyanopyridines are prepared by bringing a reactant stream comprising an alkyl substituted pyridine, ammonia, steam and oxygen into contact with a novel catalyst composition which results in high selectivity to the desired cyanopyridine.


4

5
Scherhag Bernhard, Hartung Sigurd, Hausweiler Arnold, Gruenewald Herbert: Process for the preparation of cyanopyridines. Bayer, February 22, 1967: GB1060043-A (1 worldwide citation)

Cyanopyridines are prepared by reacting in the gaseous phase at 300 DEG to 700 DEG C. one mole of an alkylated pyridine with 0.5 to 10 moles of oxygen, 0.5 to 1.5 moles of ammonia and 0.5 to 10 moles of steam in the presence of a solid phosphoric acid catalyst formed by heating a phosphoric acid wit ...


6
Wolfgang Hoelderich, Norbert Goetz: Preparation of cyanopyridines. BASF Aktiengesellschaft, Keil & Weinkauf, June 5, 1990: US04931564

Cyanopyridines of the formula ##STR1## are prepared by reacting acrolein and an alkanal ##STR2## or its acetal or ketone of the formula ##STR3## where R.sup.1, R.sup.2 and R.sup.3 may be identical or different and are each hydrogen, alkyl of 1 to 6 carbon atoms or aryl and R.sup.4 is alkyl and n is ...


7

8
Process for the preparation of cyanopyridines. Lonza, April 22, 1976: GB1432903-A

1432903 Cyanopyridines LONZA Ltd 9 Aug 1974 [10 Aug 1973] 35133/74 Heading C2C Cyanopyridines are obtained by reacting alkyl pyridines with oxygen or air and ammonia in the gas phase, the molar ratio of ammonia to alkyl pyridine being 3Ă€5 : 1 to 12 : 1, in the presence of a catalyst which is pure va ...