Pyrrolo[1,2‑<i>a</i>]quinoxalines: Novel Synthesis via Annulation of 2‑Alkylquinoxalines
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In an attempt to synthesize a novel homoleptic complex 3 from 2-methyl-3-phenylquinoxaline 1 and Ir(acac)3 for application as a triplet emitter in OLEDs (organic light-emitting diodes) no cyclometalation was observed. Instead, an annulation to 1-methyl-4-phenylpyrrolo[1,2-a]quinoxaline 2 was observed. Since pyrroloquinoxalines are potentially bioactive and few paths for their synthesis are known, selected reactions and conditions were investigated, suggesting Ir(acac)3 as catalyst and proving glycerol to be a reactant.
创建时间：
2016-02-24
