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2005
Fused pyridine derivatives
R 0450
Synthesis and Functionalization of 5-Substituted Neocuproine Derivatives. —
bromination of neocuproine (I) at position 5 is smoothly achieved after silyl
30- 138 Selective
protection of the methyl side chains [cf. (III)]. The so obtained 5-bromoneocuproine
(V) is successfully applied in Suzuki and Sonogashira cross coupling reactions as well
as in Buchwald—Hartwig amination to generate a diversity of 5-substituted neocuproine analogues, e.g. (VII), (IX) and (XI), respectively. — (EGGERT, J. P. W.;
LUENING*, U.; NAETHER, C.; Eur. J. Org. Chem. 2005, 6, 1107-1112; Inst. Org.
Chem., Christian-Albrechts-Univ., D-24098 Kiel, Germany; Eng.) — Mischke
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