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Synthesis of benzo[b]thieno‐ and benzo[b]furano‐[2,3‐a]pyrrolo[3,4‐c]carbazole‐5‐, ‐7‐ and ‐5,7‐dione
Author(s) -
Hudkins Robert L.,
Johnson Neil W.
Publication year - 2001
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570380306
Subject(s) - chemistry , carbazole , stereochemistry , organic chemistry
Benzo[b]thieno[2,3‐a]pyrrolo[3,4‐c]carbazoles and benzo[b]furano[2,3‐a]pyrrolo[3,4‐c]carbazoles were prepared from 2‐(2‐benzo[b]thieno)‐ (8) and 2‐(2‐benzo[b]furano)‐3‐[3‐(2,5‐dioxo‐lH‐pyrrolidinyl)]indole (9) by a palladium(II)acetate/tetrachloro‐1,4‐benzoquinone oxidative A‐E ring closure.