METHOD FOR PREPARING 5-TRIFLUOROMETHYL-3,6-DIOXA-8-SULFONYLFLUOROPERFLUOROOCTENE

FIELD: chemical technology. ^ SUBSTANCE: invention relates to a method for preparing 5-trifluoromethyl-3,6-dioxa-8-sulfonylfluoroperfluorooctene. Method involves contacting 2,5-di-(trifluoromethyl)-3,6-dioxa-8-sulfonylfluoroperfluorooctanoyl fluoride with sodium carbonate suspension in diglyme to yi...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	ARASLANOV GRIGORIJ GAJSOVICH, ZAKHAROV VLADIMIR JUR'EVICH, VYRAZHEJKIN EVGENIJ SERGEEVICH, NOVIKOVA MARGARITA DMITRIEVNA, LJUBIMOVA LJUDMILA ALEKSANDROVNA, VANDYSHEV SERGEJ ANATOL'EVICH, SEZEMIN VLADIMIR ALEKSEEVICH, SHABALIN DMITRIJ ALEKSANDROVICH, LJUBIMOV IGOR' ALEKSANDROVICH, ALEKSANDROVA TAT'JANA SEMENOVNA, KALASHNIKOVA NATAL'JA ALEKSANDROVNA
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMISTRY METALLURGY ORGANIC CHEMISTRY
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	FIELD: chemical technology. ^ SUBSTANCE: invention relates to a method for preparing 5-trifluoromethyl-3,6-dioxa-8-sulfonylfluoroperfluorooctene. Method involves contacting 2,5-di-(trifluoromethyl)-3,6-dioxa-8-sulfonylfluoroperfluorooctanoyl fluoride with sodium carbonate suspension in diglyme to yield 2,5-di-(trifluoromethyl)-3,6-dioxa-8-sulfonylfluoroperfluorooctanoic acid sodium salt followed by pyrolysis of abovementioned salt at increased temperature to yield 5-trifluoromethyl-3,6-dioxa-8-sulfonylfluoroperfluorooctene and isolating the latter from the reaction zone by distillation off. Method involves preliminary contacting sodium carbonate suspension in diglyme with perfluoro-(2-propoxypropionyl)-fluoride to yield perfluoro-2-propoxypropionic acid sodium salt that is subjected for pyrolysis at temperature 140°C to yield perfluoropropylvinyl ester that is distilled off from the reaction zone. ^ EFFECT: improved preparing method. ^ 1 tbl, 5 ex