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<p>Lewis acid promoted synthesis of methylene-bridged α-and γ-<em>bis-</em>benzopyrones</p>

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Title Statement <p>Lewis acid promoted synthesis of methylene-bridged α-and γ-<em>bis-</em>benzopyrones</p>
 
Added Entry - Uncontrolled Name Kumar, Sandeep ; Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi 110 007, India
Prasad, Ashok K; Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi 110 007, India
Mehta, Shilpika Bali; Kalindi College (University of Delhi), Delhi 110 008, India
 
Uncontrolled Index Term O-Methoxyacetyl derivatives of hydroxyl-chromanones, coumarins and chromones, Lewis acid, methylene-bridged bis-benzopyrones, Fries rearrangement
 
Summary, etc. <p style="text-align: justify;">The Lewis acid promoted Fries rearrangement of <em>O</em>-methoxyacetyl derivatives of hydroxy-chromanones, coumarins and chromones under solvent-free condition gives isomeric methylene-bridged bischromanones, biscoumarins and bischromones, respectively, in good yields. The benzopyrone precursors undergo intermolecular rearrangement wherein two benzopyrone moieties are joined through their benzene rings <em>via</em> an un-substituted methylene bridge.</p>
 
Publication, Distribution, Etc. Indian Journal of Chemistry (IJC)
2022-02-02 16:02:00
 
Electronic Location and Access application/pdf
http://op.niscair.res.in/index.php/IJC/article/view/60053
 
Data Source Entry Indian Journal of Chemistry (IJC); ##issue.vol## 61, ##issue.no## 1 (2022): Indian Journal of Chemistry-(IJC)
 
Language Note en