Pyrrolo [1, 2-a] quinoxalines: Novel Synthesis via Annulation of 2-Alkylquinoxalines

S Ammermann, C Hrib, PG Jones, WW du Mont…

文献索引：Ammermann, Sven; Hrib, Christian; Jones, Peter G.; Du Mont, Wolf-Walther; Kowalsky, Wolfgang; Johannes, Hans-Hermann Organic Letters, 2012 , vol. 14, # 19 p. 5090 - 5093

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被引用次数: 10

摘要

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 ...