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Procedure for HOBr trapping using 2,3-dimethylbut-2-
ene (1) with TBCA/wet SiO2
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1 1212
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The substrates (1.00 mmol of 1), wet SiO2 (0.5 g, SiO2
powder/H2O, 50% w/w), and TBCA (0.33 mmol) were
added to 5 cm3 acetonitrile at room temperature or reflux
(see general procedure) and the mixture was stirred for 3 h.
Monitoring the reaction by TLC showed that 1 had par-
ticipated in the reaction [48]. Similar results were obtained
when the reaction was conducted by HOBr itself.
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Acknowledgments Financial support for this work by the Bu Ali Sina
University, Hamedan 6517838683, Iran, is gratefully acknowledged.
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