JPS5592386A - Preparation of 4-piperidone spiroketal compound - Google Patents

Preparation of 4-piperidone spiroketal compound

Info

Publication number
JPS5592386A
JPS5592386A JP16209778A JP16209778A JPS5592386A JP S5592386 A JPS5592386 A JP S5592386A JP 16209778 A JP16209778 A JP 16209778A JP 16209778 A JP16209778 A JP 16209778A JP S5592386 A JPS5592386 A JP S5592386A
Authority
JP
Japan
Prior art keywords
compound
alkyl
piperidone
formula
acid
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
JP16209778A
Other languages
Japanese (ja)
Inventor
Yutaka Nakahara
Naohiro Kubota
Toshihiro Shibata
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.)
Adeka Corp
Original Assignee
Adeka Argus Chemical Co 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 Adeka Argus Chemical Co Ltd filed Critical Adeka Argus Chemical Co Ltd
Priority to JP16209778A priority Critical patent/JPS5592386A/en
Publication of JPS5592386A publication Critical patent/JPS5592386A/en
Pending legal-status Critical Current

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  • Nitrogen Condensed Heterocyclic Rings (AREA)

Abstract

PURPOSE: To prepare the title compound useful as a light stabilizer or its intermediate, in a short reaction time, in high yield, by reacting 4-piperidone ketal or its acid addition salt with a trimethylolalkane compound.
CONSTITUTION: The compound of formula III is prepared by (1) reacting a 4-piperidone ketal compound of formula I (R2 is 1W12C alkyl, or alkyl having ether linkage) or its acid addition salt with a trimethylolalkane compound of formula II (R1 is 1W6C alkyl) in the absence of solvent, or if necessary, in a solvent such as benzene and toluene, pref. at 60W200°C, pref. in the presence of an acidic catalyst such as hydrochloric acid, sulfuric acid, p-toluenesulfonic acid, etc., (2) distilling out the produced alcohol under atmospheric pressure or reduced pressure, and (3) separating the produced crystals by filtering, etc.
COPYRIGHT: (C)1980,JPO&Japio
JP16209778A 1978-12-29 1978-12-29 Preparation of 4-piperidone spiroketal compound Pending JPS5592386A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16209778A JPS5592386A (en) 1978-12-29 1978-12-29 Preparation of 4-piperidone spiroketal compound

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16209778A JPS5592386A (en) 1978-12-29 1978-12-29 Preparation of 4-piperidone spiroketal compound

Publications (1)

Publication Number Publication Date
JPS5592386A true JPS5592386A (en) 1980-07-12

Family

ID=15748002

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16209778A Pending JPS5592386A (en) 1978-12-29 1978-12-29 Preparation of 4-piperidone spiroketal compound

Country Status (1)

Country Link
JP (1) JPS5592386A (en)

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