| 摘要 |
Organophosphorus esters, useful as intermediates in the synthesis of fibre-reactive insect proofing agents for keratinous materials, are prepared as follows: <IMAGE> +TR <IMAGE> <IMAGE> +TR <IMAGE> <IMAGE> +TR <IMAGE> wherein: R1 is an alkyl, alkoxy, alkylamino or alkylmercapto radical with 1-6 carbon atoms a dialkylamino radical of 2 to 6 carbon atoms or a phenyl or amino radical; R2 is an alkyl radical of 1-6 carbon atoms; R3 is a divalent alkylene radical of 1-12 carbon atoms; X is either a sulphur or oxygen atom; and hal is either a chlorine or bromine atom.
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