Organophosphorus compounds. P-Arylated perhydro-1,2-azaphosphorines

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Abstract
Treatment of ethyl 4-bromobutylphosphonochloridate with phenylmagnesium bromide, followed by acid-catalysed hydrolysis of the product, gave 4- bromobutyl(phenyl)phosphinic acid. This was converted into the corresponding phosphinamide by treatment with thionyl chloride and then with aqueous ammonia. Cyclodehydrobromination with sodium hydride in warm xylene then gave a good yield of 2-phenylperhydro-1,2- azaphosphorine 2-oxide. Some other routes to this compound were investigated.

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