Studies on novel heterocyclic ring systems. Reaction of 4‐hydroxylcoumarin with o ‐aminobenzaldehyde and 2‐mercaptoaniline
1980; Wiley; Volume: 17; Issue: 4 Linguagem: Inglês
10.1002/jhet.5570170438
ISSN1943-5193
AutoresK. TABAKOVIC, Ibro Tabaković, M. Trkovnik, Albin Jurić, Nenad Trinajstić,
Tópico(s)Synthesis and Biological Evaluation
ResumoAbstract Reactions of 4‐hydroxycoumarin ( 1 ) with o ‐aminobenzaldehyde ( 2 ) and 2‐mercaptoaniline ( 5 ) have been investigated. The yet unreported 6,12‐dihydro‐l‐benzopyrano[3,4‐ b ][1,4]benzothiazin‐6‐one ( 6 ) system has been synthesized and characterized on the basis of spectral and analytical data. A novel synthetic route to 6 H ‐l‐benzopyrano[4,3‐ b ]quinolin‐6‐one ( 4 ) is reported. HMO calculations predict the most reactive sites on the molecules.
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