Regioselective Synthesis of 2‐(Trifluoromethyl)‐3‐ethoxycarbonyl‐4‐(2‐oxo‐2‐arylethyl)‐4 H ‐chromene Derivatives by [3, 3] Sigmatropic Rearrangement

A new and an efficient method has been developed to synthesize ethyl 4‐(2‐oxo‐2‐arylethyl)‐2‐(trifluoromethyl)‐4 H ‐chromene‐3‐carboxylate derivatives 3 from 2 H ‐chromene 1 and aryl acetylene 2 through [3, 3] sigmatropic rearrangement in presence of catalytic amount of BF 3 . OEt 2 (10 mol %)....

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Bibliographic Details
Published in:ChemistrySelect (Weinheim) 2017-12, Vol.2 (35), p.11545-11547
Main Authors: Kuchukulla, Ratnakar Reddy, Desagoni, Madhu, Narra, Srikanth Reddy, Goutham, Santhosh Kumar, Banda, Narsaiah
Format: Article
Language:English
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Summary:A new and an efficient method has been developed to synthesize ethyl 4‐(2‐oxo‐2‐arylethyl)‐2‐(trifluoromethyl)‐4 H ‐chromene‐3‐carboxylate derivatives 3 from 2 H ‐chromene 1 and aryl acetylene 2 through [3, 3] sigmatropic rearrangement in presence of catalytic amount of BF 3 . OEt 2 (10 mol %).
ISSN:2365-6549
2365-6549
DOI:10.1002/slct.201701723