GB739088A - Dealkylation of substituted pyridines - Google Patents

Dealkylation of substituted pyridines

Info

Publication number
GB739088A
GB739088A GB242053A GB242053A GB739088A GB 739088 A GB739088 A GB 739088A GB 242053 A GB242053 A GB 242053A GB 242053 A GB242053 A GB 242053A GB 739088 A GB739088 A GB 739088A
Authority
GB
United Kingdom
Prior art keywords
pyridine
lutidine
hydrogen
dealkylation
cobalt
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
GB242053A
Inventor
David William Milner
Peter Clapham
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.)
YORKSHIRE TAR DISTILLERS Ltd
Original Assignee
YORKSHIRE TAR DISTILLERS Ltd
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
Application filed by YORKSHIRE TAR DISTILLERS Ltd filed Critical YORKSHIRE TAR DISTILLERS Ltd
Priority to GB242053A priority Critical patent/GB739088A/en
Publication of GB739088A publication Critical patent/GB739088A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D213/00—Heterocyclic 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
    • C07D213/02—Heterocyclic 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
    • C07D213/04—Heterocyclic 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
    • C07D213/06—Heterocyclic 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 containing only hydrogen and carbon atoms in addition to the ring nitrogen atom

Abstract

Pyridine homologues are dealkylated to produce pyridine and/or alkyl pyridines of lower molecular weight than the starting material by a process comprising passing an alkyl pyridine in the vapour phase together with hydrogen into contact with a hydrogenation catalyst at an elevated temperature. Preferably the catalysts contain no free metal, such as the molybdates and thiomolybdates of nickel, cobalt and copper are used. In the example a -picoline containing some 2.6-lutidine is treated with hydrogen at 450 DEG C. in the presence of cobalt molybdate to give pyridine with a small amount of 2.6-lutidine.
GB242053A 1953-01-28 1953-01-28 Dealkylation of substituted pyridines Expired GB739088A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB242053A GB739088A (en) 1953-01-28 1953-01-28 Dealkylation of substituted pyridines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB242053A GB739088A (en) 1953-01-28 1953-01-28 Dealkylation of substituted pyridines

Publications (1)

Publication Number Publication Date
GB739088A true GB739088A (en) 1955-10-26

Family

ID=9739250

Family Applications (1)

Application Number Title Priority Date Filing Date
GB242053A Expired GB739088A (en) 1953-01-28 1953-01-28 Dealkylation of substituted pyridines

Country Status (1)

Country Link
GB (1) GB739088A (en)

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