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The complex formation reactions of boric and boronic acids (RB(OH) 2 : R=OH, n-Bu, Ph, and m-NO 2 Ph) with 4-isopropyltropolone (Hipt) and chromotropic acid (H 2 cht 2- ) have been studied kinetically at various pH. The reactions of H 2 ipt + with boronic acids were faster than those of Hipt by a factor of 1.5-11, and fully deprotonated ipt ...
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