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The synthesis of brominated tropolone-based bischalcones
Pages: 44-47
Year: Issue:  1
Journal: Chemical Research

Keyword:  brominationtropolonebischalconeelemental brominesynthesis;
Abstract: The direct bromination reaction of tropolone‐based bischalcone 3 ,3′‐{1 ,4‐ phenyle‐nebis[(1 E)‐3‐oxoprop‐1‐ene‐1 ,3‐diyl]}bistropolone using 2 .1 equiv .or 4 .2 equiv .of elemental bromine in acetic acid as solvent was conducted .The bromination reaction took place exclusive‐ly on tropolone ring to give the corresponding 7‐bromotropolone‐ and 5 ,7‐dibromotropolone‐based bischalcones in 81% and 73% yields , respectively .The molecular structures of both newly synthesized products were confirmed by spectral data and elemental analyses .
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