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The Reaction of 4‐Oxo‐4 H ‐[1]benzopyran‐3‐carbaldehyde with 1,2‐Benzenediamine. X‐Ray Structure Analysis of the Reaction Product
Author(s) -
Rihs Grety,
Sigg Ivo,
Hass Georges,
Winkler Tammo
Publication year - 1985
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19850680717
Subject(s) - chemistry , benzopyran , dehydrogenation , product (mathematics) , x ray , stereochemistry , medicinal chemistry , organic chemistry , physics , geometry , mathematics , quantum mechanics , catalysis
The reaction product of 4‐oxo‐4 H ‐[1]benzopyran‐3‐carbaldehyde and 1,2‐benzenediamine is 1,8‐dihydro‐6,13‐bis(2‐hydroxybenzoyl)dibenzo[ b , i ]‐1,4,8,11‐tetraazacyclotetradeca‐4,6,11,13‐tetraene ( 1 ), and its dehydrogenation product is 3‐(2‐benzimidazolyl)‐4 H ‐[1]benzopyran‐4‐one ( 2 ) as shown by X‐ray structure analysis confirming our earlier report.