Process for the preparation of 9,10-dihydro-9-oxa-10-organyl-phosphaphenanthren-10-oxide and derivatives thereof

Process for the preparation of 9,10-dihydro-9-oxa-10-organyl-phosphaphenanthren-10-oxide and derivatives thereof

Preparation of 9,10-dihydro-9-oxa-10-organylphosphaphenanthrene-10-oxide comprises reacting 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide with a mono- or polyhydric alcohol and an ortho ester to form a first intermediate. The first intermediate is reacted with another mono- or polyhydric alcoho...

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Bibliographische Detailangaben
Hauptverfasser: DITTRICH, UWE, DOERING, MANFRED, DR, JUST, BERTHOLD, CIESIELSKI, MICHAEL
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
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Zusammenfassung:Preparation of 9,10-dihydro-9-oxa-10-organylphosphaphenanthrene-10-oxide comprises reacting 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide with a mono- or polyhydric alcohol and an ortho ester to form a first intermediate. The first intermediate is reacted with another mono- or polyhydric alcohol to form a second intermediate which is converted to the product using an alkylation agent. An independent claim is also included for a process for the preparation of a natural product or plastic having flame-retardant properties, comprising the inventive preparation process, and introducing the second intermediate product into the natural product or plastic.