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Catalysis Science & Technology
Page 4 of 5
COMMUNICATION
Journal Name
Turculet, Angew. Chem., Int. Ed., 2017, 56, 15901–15904.
acetophenone product, which correlates with conversions
determined from 1H NMR samples. A substoichiometric run
(complex 3/phenylethanol/TBHP 1:4:4) reveals a rapid loss of
the characteristic CO bands of complex 3 at 1971, 1912 and
1881 cm–1, which supports manganese oxidation with
concomitant loss of CO as a critical step for catalyst activation
(cf electrochemistry).
In conclusion, we describe the synthesis of new Mn(0) and Mn(I)
complexes containing 1,2,3-triazolylidene ligands and their
application in oxidation of alcohols to synthetically versatile
carbonyl compounds. The catalytic process is remarkably
selective and suppresses overoxidation, and is applicable to a
variety of alcohols under mild conditions (40 °C). Further
investigation of the application of the organometallic
manganese complexes in catalysis, and in elucidating the
reaction mechanism is currently underway in our laboratories.
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We
thank
FCT
(PTDC/QUI-QIN/28151/2017,CERMAX,
PD/BD/105994/2014), the ERC (CoG 615653) and SNSF
(200021-162868), and MINECO (IJCI-2015-23407 to G.G.-B.).
Conflicts of interest
There are no conflicts to declare.
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