Process for selective production of 3-methylpyridine

Details Process for selective production of 3-methylpyridine Process for selective production of 3-methylpyridine

C - Chemistry, Metallurgy

07

D

260/294.6

C07D 213/09 (2006.01) C07D 213/08 (2006.01) C07D 213/12 (2006.01)

Patent

CA 1341144

A process for the selective production of 3-methylpyridine in high yield comprising the step of contacting a vaporized feed stream containing 2-methyl-1,5-pentanediamine with a transition metal-oxide catalyst of a copper chromite or a molybdenum oxide at a temperature of about 400-600°C for a contact time of less than about 30 seconds. The catalyst may be on a suitable heterogeneous support, and additives in the feed stream may include 3-methylpiperidine as well as water, hydrogen, ammonia, or nitrogen or some other inert gas. A fluid-bed reactor is preferred, with recycling of by-product and continuous effective runs without catalyst regeneration being accomplished at a temperature of about 500-600°C.

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