Fast hydrazone reactants: electronic and acid/base effects strongly influence rate at biological pH.
Fast hydrazone reactants: electronic and acid/base effects strongly influence rate at biological pH.
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DOI:
10.1021/ja407407h
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发表时间:
2013-11-27
影响因子:
15
通讯作者:
Crisalli P
中科院分区:
文献类型:
--
作者:
Kool ET;Park DH;Crisalli P
Kinetics studies with structurally varied aldehydes and ketones in aqueous buffer at pH 7.4 reveal that carbonyl compounds with neighboring acid/base groups form hydrazones at accelerated rates. Similarly, tests of a hydrazine with a neighboring carboxylic acid group show that it also reacts at an accelerated rate. Rate constants for the fastest carbonyl/hydrazine combinations are 2–20 M−1sec−1, which is faster than recent strain-promoted cycloaddition reactions.
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