1,6-DIOXA-9,9,10,11,11-PENTAMETHYL-10-AZASPIRO (6,5) DODEC-3-ENE

1,6-DIOXA-9,9,10,11,11-PENTAMETHYL-10-AZASPIRO (6,5) DODEC-3-ENE

The solution concerns 1,6-Dioxa-9,9,10,11,11-pentamethyl-10-azaspiro[6,5]dodes-3-ene of formula I. The above mentioned compound is prepared in the following way: 1,2,2,6,6-pentamethyl-4-oxopiperidine of formula II reacts with 2-butene-1,4-diol of formula III at a temperature of reversed current of h...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LUSTON JOZEF CSC.,CS, VASS FRANTISEK RNCSC.,CS
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:The solution concerns 1,6-Dioxa-9,9,10,11,11-pentamethyl-10-azaspiro[6,5]dodes-3-ene of formula I. The above mentioned compound is prepared in the following way: 1,2,2,6,6-pentamethyl-4-oxopiperidine of formula II reacts with 2-butene-1,4-diol of formula III at a temperature of reversed current of hydrocarbonic solvent, which results in origination of azeotropic mixture with water, like benzene, toluene or xylenes, in presence of acid catalyser like 4-toluene sulfonic acid.The compound of formula I can be used as light stabiliser for polymers and for preparation of polymeric light stabilisers.