Organophosphorus compounds. II. Interaction of dimethylphosphoramidic dichloride with hexamethylphosphoramide: Adduct formation and radical exchange

Autor:	M. Pianka, B. D. Owen
Rok vydání:	2007
Předmět:	Potassium hydroxide chemistry.chemical_compound chemistry Polymerization Hexamethylphosphoramide Amide Polymer chemistry medicine Photochemistry Chloride Adduct medicine.drug
Zdroj:	Journal of Applied Chemistry. 5:525-535
ISSN:	1934-998X 0021-8871
DOI:	10.1002/jctb.5010051001
Popis:	When an equimolar mixture of dimethylphosphoramidic dichloride and hexamethylphosphoramide is heated (120–200°), radical exchange (NMe2 for Cl) takes place and tetramethylphosphorodiamidic chloride is formed. This radical exchange follows a first-order reaction at 120°. An equimolar mixture of the dichloride and the amide undergoes polymerisation at room temperature, and after 6–8 days solidifies to a crystalline mass. This mass appears to be a mixture of a salt-like addition product of the dichloride and the amide approaching a hexameric state, and the unchanged dichloride and amide. On heating, it undergoes radical exchange with the formation of tetramethylphosphorodiamidic chloride which yields bisdimethylaminophosphonous anhydride (schradan) on treatment with potassium hydroxide in toluene1.
Databáze:	OpenAIRE
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