Production of cyanopyridines from piperidines
AssigneeThe Lummus Company
InventorsHermann Richtzenhain, Paul Janssen, deceased
Life of this patent
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Abstract
Nicotinonitrile is produced from a piperidine having an alkyl substituent in the three position by contact with ammonia, in the absence of molecular oxygen, and in the presence of oxidized vanadia supported on a porous support, containing from 25% to 75%, by weight, of the vanadia, the vanadia having been placed in molten form substantially entirely within the pores of the support, with the support having a surface area greater than 50 m.sup.2 /gm and a porosity greater than 0.4 cc/gm, with the support being either gamma-alumina or silica-alumina.
Claims6
A process for producing a cyano-pyridine, comprising:
- contacting an alkyl piperidine with ammonia in the absence of any gaseous oxygen and in the presence of oxidized vanadia supported on a porous support, said support containing from about 25% to about 75%, by weight, of the vanadia having been placed in molten form substantially entirely within the pores of the support, the support having a surface area greater than about 50 m.sup.2 /gm and a porosity greater than about 0.4 cc/gm, said support being selected from the group consisting of gamma-alumina and silica-alumina.
Dependencies are inferred from the claim text.