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JPS6470464A - Selective demethylation in the alpha-position of methylpyridine - Google Patents

Selective demethylation in the alpha-position of methylpyridine

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Publication number
JPS6470464A
JPS6470464AJP62227333AJP22733387AJPS6470464AJP S6470464 AJPS6470464 AJP S6470464AJP 62227333 AJP62227333 AJP 62227333AJP 22733387 AJP22733387 AJP 22733387AJP S6470464 AJPS6470464 AJP S6470464A
Authority
JP
Japan
Prior art keywords
alpha
demethylation
methylpyridine
nickel
zirconia
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.)
Pending
Application number
JP62227333A
Other languages
Japanese (ja)
Inventor
Tetsuo Nakayama
Masahiro Saito
Osamu Tajima
Kazuhiko Tate
Masami Ono
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.)
Japan Steel Works Ltd
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
Japan Steel Works 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 Agency of Industrial Science and Technology, Japan Steel Works LtdfiledCriticalAgency of Industrial Science and Technology
Priority to JP62227333ApriorityCriticalpatent/JPS6470464A/en
Publication of JPS6470464ApublicationCriticalpatent/JPS6470464A/en
Pendinglegal-statusCriticalCurrent

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Abstract

PURPOSE:To increase the conversion of the feedstock with high demethylation selectivity maintained, using a catalyst of nickel supported with zirconia in the selective demethylation of methylpyridine in the alpha-position in the presence of steam. CONSTITUTION:The demehylation of methylpyridines in the alpha-position is carried out in the presence of a nickel catalyst supported on zirconia (nickel content is 2-80wt.%, preferably 5-70wt.%), in the presence of 1-50mol. of steam, at 200-500 deg.C, preferably 250-450 deg.C. This process has a wide range of applicable temperature and the loss of the feedstock caused by decomposition of the pyridine nucleus can be minimized. Thus, the high selectivity of demethylation in the alpha-position is maintained, even in high conversion to give the product which is used in the production of pyridine, picoline or lutidine (as intermediate of medicines, agrochemicals or surface active agents).
JP62227333A1987-09-101987-09-10Selective demethylation in the alpha-position of methylpyridinePendingJPS6470464A (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
JP62227333AJPS6470464A (en)1987-09-101987-09-10Selective demethylation in the alpha-position of methylpyridine

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
JP62227333AJPS6470464A (en)1987-09-101987-09-10Selective demethylation in the alpha-position of methylpyridine

Publications (1)

Publication NumberPublication Date
JPS6470464Atrue JPS6470464A (en)1989-03-15

Family

ID=16859163

Family Applications (1)

Application NumberTitlePriority DateFiling Date
JP62227333APendingJPS6470464A (en)1987-09-101987-09-10Selective demethylation in the alpha-position of methylpyridine

Country Status (1)

CountryLink
JP (1)JPS6470464A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS6470147A (en)*1987-09-101989-03-15Agency Ind Science TechnSteam-dealkylation catalyst
CN104888755A (en)*2015-06-022015-09-09安徽工业大学Picoline and water steam demethylation catalyst and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS62227335A (en)*1986-03-281987-10-06株式会社東芝Ultrasonic diagnostic apparatus
JPS62227334A (en)*1986-03-281987-10-06株式会社東芝 ultrasound endoscope

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS62227335A (en)*1986-03-281987-10-06株式会社東芝Ultrasonic diagnostic apparatus
JPS62227334A (en)*1986-03-281987-10-06株式会社東芝 ultrasound endoscope

Cited By (2)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS6470147A (en)*1987-09-101989-03-15Agency Ind Science TechnSteam-dealkylation catalyst
CN104888755A (en)*2015-06-022015-09-09安徽工业大学Picoline and water steam demethylation catalyst and preparation method thereof

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