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Bromotrimethylsilane is highly selective for P–O silyldealkylation of mixed carboxylate–phosphonate alkyl esters and can be used to prepare trimethylsilyl amido-, alkynyl-, and iodoalkyl-phosphonates in good yield, thus making the corresponding phosphonic acids readily available via hydrolysis with neutral H2O.
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McKenna et al. (1979) studied this question.
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