The mild cleavage of phosphonodiester groups supported on a silica matrix has been investigated. The use of TMSBr (bromotrimethylsilane) with diethyl phosphonates has been revisited, and interactions of phosphonoacids with silicon species are described. An alternative route utilising di-tert-butyl phosphonate group has also been studied and in this case cleavage has been demonstrated in very mild conditions.
C. Carbonneau, R. Frantz, J. Durand, M. Granier, G. F. Lanneau and R. J. P. Corriu, J. Mater. Chem., 2002, 12, 540 DOI: 10.1039/B106838E
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