Zur Synthese von Siloxanen XI. Spaltung von Siloxanen durch Bortrifluorid

Article abstract of DOI:10.1016/0022-328X(88)80636-3

The cleavage of siloxane bonds by BF3 was investigated kinetically by 1H NMR spectroscopy.The reactions could be evaluated by use ofa pseudo-first order rate law, when a sufficiently large excess of BF3 was used.The order with respect to BF3 was found to be 4.7.The rate constants obtained could be correlated to ?^*- values with a ρ^*-value of -1.0.The ?^*-value found previously by 29Si NMR spectroscopy for the Me3SiO group of 0.35 was confirmed.