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Metalation and halogen-metal exchange in the imidazo[1,2-a]quinoxaline series

✍ Scribed by Stéphanie Parra; Olivier Vitse; Véronique Bénézech; Carine Deleuze-Masquéfa; Guy Subra; Jacques Bompart; Roger Escale; Jean P. Chapat; Pierre A. Bonnet

Publisher
Journal of Heterocyclic Chemistry
Year
2001
Tongue
English
Weight
78 KB
Volume
38
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

The n‐butyllithium and lithium 2,2,6,6‐tetramethylpiperidide metalation and the halogen‐metal exchange of imidazo[1,2‐a]quinoxaline derivatives followed by quenching with various electrophiles were studied. The reaction conditions have been optimized and various C~1~ substituted imidazo[1,2‐a]quinoxalines were obtained in high yields.

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