Ceric ammonium nitrate (CAN) mediated novel dimerizations of 4-hydroxyquinolin-3(1H)-ones: the first example of reactions of oxygencentered radicals from 1,3-dicarbonyl compounds
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Add time:09/29/2019 Source:infona.pl
Reactions of 4-hydroxyquinolin-2(1H)-ones (1) and 3-alkylated 4-hydroxyquinolin-2(1H)-ones (2) with CAN in methanol gave quinolin-2(1H)-one dimers 3, 10 and 11 with CC and CO linkages between the two nitrogent containing six-member rings, respectively, showing the ambident reactivities of α,α′-dicarbonylalkyl radicals as carbon- and oxygen-centered radicals.
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