Novel conversion of some E-3-benzylideneflavanones to 3-benzoylchromones under a Schmidt rearrangement condition

Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry

Volumn 38, Issue 8, 1999, Pages 889-892

  Mallik, Asok K ^a   Chattopadhyay, Falguni ^a  

^a JADAVPUR UNIVERSITY   (India)

Author keywords

[No Author keywords available]

Indexed keywords

BENZYLIDENE DERIVATIVE; CHROMONE DERIVATIVE; FLAVANONE DERIVATIVE;

ARTICLE; CATALYSIS; CHEMICAL ANALYSIS; CHEMICAL REACTION; CHEMICAL STRUCTURE;

EID: 0033499111     PISSN: 03764699     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (17)

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13. Typical experimental procedure. An appropriate E-3-benzylideneflavanone (1 mmole) was dissolved in TFA (3 mL) at 5 °C and to the cold solution sodium azide (1.5 mmoles) was added in three portions at 5 min intervals. The resulting mixture was kept at room temperature for 4 days and then diluted with water 150 mL) and extracted with ether (3 × 25 mL). The concentrate of the ether extract was chromatographed over silica gel to get pure product.
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15. All the products gave satisfactory analytical and spectral data.
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