A PROCESS FOR PREPARATION OF DOPO DERIVATIVES

A PROCESS FOR PREPARATION OF DOPO DERIVATIVES

The present invention relates to a process for the preparation of a DOPO derivative DOPO-X comprising a 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide DOPO moiety and a derivative group X according to formula 1, the process comprising the preparation of a DOPO derivative wherein X = Cl comprisin...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SALMEIA, Khalifah Ahmad Mohammad, BABINIEC, Lucas, GAAN, Sabyasachi, ZICH, Thomas
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:The present invention relates to a process for the preparation of a DOPO derivative DOPO-X comprising a 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide DOPO moiety and a derivative group X according to formula 1, the process comprising the preparation of a DOPO derivative wherein X = Cl comprising the steps; a) providing a solution of DOPO in a solvent, b) introducing chlorine into the DOPO solution whilst maintaining a maximum reaction temperature below 20°C forming DOPO-Cl, c) optionally removing volatiles and/or crystallising DOPO-Cl, d) optionally further derivatization reaction steps. The invention further relates to the use of DOPO-Cl in a process for preparation of further DOPO-derivatives, in particular DOPO-EDA, DOPO-ETA or DOPO-PEPA.