JPS55102581A - Preparation of 4-piperidone spiroketal compound - Google Patents

Preparation of 4-piperidone spiroketal compound

Info

Publication number
JPS55102581A
JPS55102581A JP1081779A JP1081779A JPS55102581A JP S55102581 A JPS55102581 A JP S55102581A JP 1081779 A JP1081779 A JP 1081779A JP 1081779 A JP1081779 A JP 1081779A JP S55102581 A JPS55102581 A JP S55102581A
Authority
JP
Japan
Prior art keywords
compound
piperidone
alkyl
preparation
formula
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
JP1081779A
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 JP1081779A priority Critical patent/JPS55102581A/en
Publication of JPS55102581A publication Critical patent/JPS55102581A/en
Pending legal-status Critical Current

Links

Landscapes

  • Nitrogen Condensed Heterocyclic Rings (AREA)

Abstract

PURPOSE: To prepare a 4-piperidone spiroketal compound useful as a photo-stabilizer or its intermediate, easily, in high yield, by reacting a 4-piperidone compound or its acid addition salt with a 1,3-dioxane compound.
CONSTITUTION: The title compound of formula III is prepared, in high yield, in a short reaction time, by reacting (A) a 4-piperidone compound of formula I (R1 is H or alkyl) or its acid addition salt with (B) a 1,3-dioxane compound of formula II (R2 is alkyl; R3,4 are H, alkyl or aryl, or R3 and R4 may together form an alkylene), in a solvent such as alcohol, in the presence of an acidic catalyst such as phosphoric acid, at 20W300°C.
COPYRIGHT: (C)1980,JPO&Japio
JP1081779A 1979-01-31 1979-01-31 Preparation of 4-piperidone spiroketal compound Pending JPS55102581A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1081779A JPS55102581A (en) 1979-01-31 1979-01-31 Preparation of 4-piperidone spiroketal compound

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1081779A JPS55102581A (en) 1979-01-31 1979-01-31 Preparation of 4-piperidone spiroketal compound

Publications (1)

Publication Number Publication Date
JPS55102581A true JPS55102581A (en) 1980-08-05

Family

ID=11760897

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1081779A Pending JPS55102581A (en) 1979-01-31 1979-01-31 Preparation of 4-piperidone spiroketal compound

Country Status (1)

Country Link
JP (1) JPS55102581A (en)

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