A Simple, Efficient Synthesis of Dibenzyl and Di-p-nitrobenzyl 1-Hydroxyalkanephosphonates

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Abstract
Dibenzyl and di-p-nitrobenzyl 1-hydroxyalkanephosphonates 3a-i are prepared by alkylation of 1-hydroxyalkanephosphonic acids 1 with O-benzyl and O-(p-nitrobenzyl)-N,N′-dicyclohexylisoureas 2.