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Regioselective alkylation of dianions of cyclic 1.3-diketones via their monodimethylhydrazones. Synthesis of C-4 substituted cyclic 1.3-diketones

1989-1
Enders, Dieter
Demir, Ayhan Sıtkı
Cyclic 1.3-diketones are transformed into the corresponding monodimethylhydrazones, which can be alkylated regioselectively at C-4 via dianions with various alkyl halides. The regioselective alkylation of cyclic 1.3-diketones 1, to 4-substituted derivatives 4 is described.