GB1474461A - Production of nicotinic acid - Google Patents

Production of nicotinic acid

Info

Publication number
GB1474461A
GB1474461A GB3339474A GB3339474A GB1474461A GB 1474461 A GB1474461 A GB 1474461A GB 3339474 A GB3339474 A GB 3339474A GB 3339474 A GB3339474 A GB 3339474A GB 1474461 A GB1474461 A GB 1474461A
Authority
GB
United Kingdom
Prior art keywords
nicotinic acid
ammonia
nicotinonitrile
nicotinamide
decomposition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3339474A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CB&I Technology Inc
Original Assignee
Lummus Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to US46388273A priority Critical
Application filed by Lummus Co filed Critical Lummus Co
Publication of GB1474461A publication Critical patent/GB1474461A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D213/00Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
    • C07D213/02Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
    • C07D213/04Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D213/60Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with heteroatoms or with carbon atoms having three bonds to hetero atoms, with at the most one to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D213/78Carbon atoms having three bonds to hetero atoms, with at the most one to halogen, e.g. ester or nitrile radicals
    • C07D213/79Acids; Esters
    • C07D213/803Processes of preparation

Abstract

1474461 Nicotinic acid LUMMUS CO 29 July 1974 [15 Nov 1973 25 April 1974] 33394/74 Heading C2C Nicotinic acid is produced by combining nicotinonitrile with ammonia and an aqueous recycle containing nicotinamide and ammonium nicotinate, heating the resultant combination to 95-230‹ C. to effect hydrolysis of the nicotinonitrile and nicotinamide to effect decomposition thereof to nicotinic acid, the decomposition being effected with continuous removal of evolved ammonia, recovering a product containing nicotinic acid and an aqueous solution of ammonium nicotinate and nicotinamide, separating the nicotinic acid from the aqueous solution and recycling the latter. The hydrolysis and decomposition may be carried out simultaneously or separately; the ammonia may be removed by contacting the ammonium nicotinate countercurrently with an inert gas, e.g. steam. The nicotinonitrile used in the process may be obtained by reacting beta-picoline, 2,3- or 2,5-dimethylpyridine, 2- methyl - 3 - ethyl - pyridine, 3 - ethyl - pyridine, the nitrile of any of these alkyl-substituted pyridines, methylcyanopyridine or a mixture thereof with ammonia and vanadium pentoxide as described in Specification 1,474,462; a flow diagram is given for the combined processes.
GB3339474A 1973-11-15 1974-07-29 Production of nicotinic acid Expired GB1474461A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US46388273A true 1973-11-15 1973-11-15

Publications (1)

Publication Number Publication Date
GB1474461A true GB1474461A (en) 1977-05-25

Family

ID=23841667

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3339474A Expired GB1474461A (en) 1973-11-15 1974-07-29 Production of nicotinic acid

Country Status (1)

Country Link
GB (1) GB1474461A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0242535A3 (en) * 1986-04-25 1988-02-03 Degussa Aktiengesellschaft Process for the preparation of coarse-crystalline nicotinic acid of high purity

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0242535A3 (en) * 1986-04-25 1988-02-03 Degussa Aktiengesellschaft Process for the preparation of coarse-crystalline nicotinic acid of high purity

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee