Abstract
SYNLETT 2012, 23, 717–722xx.xx.2012 Advanced online publication: 24.02.2012 DOI: 10.1055/s-0031-1290565; Art ID: B65611ST © Georg Thieme Verlag Stuttgart · New York Abstract: One-pot synthesis of pyrrolo[3,2-f]and pyrrolo[2,3h]quinolines were obtained starting from substituted 5-aminoindoles, benzaldehydes, and phenylacetylenes in the presence of La(OTf)3 as a catalyst in good yields. The indole moiety in 5-aminoindole is believed to be mainly responsible for the observation of unexpected mechanistic pathway to the formation of pyrrolo[2,3h]quinoline.
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