Chen, Shaomin; Ravichandiran, Palanisamy; El-Harairy, Ahmed; Queneau, Yves; Li, Minghao; Gu, Yanlong
Organic & biomolecular chemistry,
06/2019, Letnik:
17, Številka:
24
Journal Article
A straightforward access to tricyclic indoles bearing 3,4-fused seven-membered rings has been established by using 4-aminoindoles as 1,4-bisnucleophiles in three-component reactions. 1H-Azepino4,3,2-cdindoles, 4,6-dihydro-1H-azepino4,3,2-cdindoles and 1,3,4,6-tetrahydro-5H-azepino4,3,2-cdindol-5-ones could thus be synthesized in one pot in moderate to good yields. Beyond opening access to 3,4-fused tricyclic indoles, the use of easily accessible 4-aminoindoles as C,N-1,4-bisnucleophiles also provides a new platform to be used in a diversity-oriented synthesis strategy, fully displaying its benefits of maximizing molecular complexity and reaction diversity.
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