„Tief Luftholen“ ist angesagt für die Titelreaktion, die Amine unter milden Bedingungen mit Nitroalkanen und nichtmodifizierten Ketonen kuppelt, denn dabei dient Luft alleine als Oxidationsmittel. Der praktische Prozess kommt mit geringen Katalysatormengen aus und liefert die Produkte nach kurzen Reaktionszeiten in guten Ausbeuten.
An efficient method for the oxidation of benzylic sp3 C–H bond to produce ketones or esters using rhenium(V)
complexes
as catalysts has been developed. Moreover, the amination of benzylic
sp3 C–H bond with NH2Ts in the presence
of NBS has also been reported in moderate to good yields under the
catalyst of rhenium(V)-based complexes.
New coumarin-based chiral thiourea sensor 1 was found to be an enantioselective fluorescent chemosensor for N-Boc-protected proline. The chiral sensor shows lower background fluorescence, and higher fluorescence enhancement with 18 nm blue shifts. Job plot analysis result indicates that sensor 1 can form a 1 : 1 stoichiometric complex and it could be used as a fluorescence sensor for the determination of enantiomer composition of N-Boc-protected proline.
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