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Reactions of Pyrano[3,4‐ b ]indol‐3‐ones with Dienophiles: Consecutive [4 + 2] Cycloaddition/Cycloreversion/1,2 Elimination
Author(s) -
Pindur Ulf,
ErfanianAbdoust Houshang
Publication year - 1989
Publication title -
liebigs annalen der chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 0170-2041
DOI - 10.1002/jlac.1989198902104
Subject(s) - chemistry , cycloaddition , acetylene , medicinal chemistry , sequence (biology) , organic chemistry , stereochemistry , catalysis , biochemistry
Methylpyrano[3,4‐ b ]indol‐3‐ones 1 react with selected dienophiles (as acetylene equivalents) in a consecutive Diels‐Alder/cycloreversion/1,2 elimination reaction sequence to furnish the 1‐methyl‐ and 1,4‐dimethylcarbazoles 4 .