Organometallics
Article
(
22) Yamamoto, Y.; Matsumura, T.; Takao, N.; Yamagishi, H.;
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(26) We have previously described a more complicated kinetic
scenario of this type in Pd(OAc) pyridine-catalyzed alcohol oxidation.
The mechanism of this reaction involves formation of a Pd-alkoxide
intermediate, with concomitant release of acetic acid. The kinetics shift
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3
(
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6) Typical procedures for producing boronic esters from parent
́
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̀
M.;
2
2 2
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(
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2
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(
(
7) See Supporting Information for further information.
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(
(
dependence on [Cu(OAc) ]; however, this result was obtained in the
2
presence of added acetate, which alters the kinetic dependence on
[
Cu], as elaborated in this work.
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(
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21) The pK of boric acid is likely a worse indicator of the Lewis
(
a
acidity for trimethyl borate than the boronic acids are for their
corresponding methyl esters.
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dx.doi.org/10.1021/om300586p | Organometallics 2012, 31, 7948−7957