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Condensed benzopyrans III. 3H ,4 H [1] benzopyrano [3,4‐ b ] pyrrol‐4‐ones
Author(s) -
Khan Misbahul Ain,
De Brito Morley Maria Lucia
Publication year - 1978
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.5570150830
Subject(s) - chemistry , hydrazine (antidepressant) , benzopyrans , medicinal chemistry , stereochemistry , chromatography
The diazotization of 3‐aminocoumarin followed by its reduction gave the cournarin‐3‐yl‐hydrazine which, without isolation, reacted with various carbonyl compounds in a Fisher's indohzation reaction to give derivatives (Ib‐Ih) of the yet unreported system 3 H ,4 H [1]benzopyrano[3,4‐ b ]pyrrol‐4‐one.
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