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Abstract
N-Alkylation of primary alkyl bromides with diethyl N-sodio-N-(tbutoxycarbonyl)phosphoramidate 1 carried out in boiling acetonitrile in the presence of 10mol% of tetrabutylammonium bromide as catalyst leads to the corresponding N-alkyl derivatives 2a-l. Deprotection of 2 by refluxing with ptoluenesulfonic acid in ethanol affords ammonium tosylates 3a-l in reasonable yields.