It was stated thatR when a dibromochalcone of a heterocyclic compound
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For example, bromination of (E)-chalcone with solidbrominating reagent(PyHBr3)
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was ___ed_ to a solution of the appropriate 2'-hydroxy-,l;-dibromochalcone
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The following questions relate to the experimental procedure you will
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Place 1.00 +/- mmol of dibromochalcone into a 25 mL round bottom flask or
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Monobromo derivatives could be obtained by treating the corresponding
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Preps in which 2'-acetoxy-?,?-dibromochalcone appears:. FLAVONE
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Préparation de la dibromochalcone :. Dans un ballon rodé de 100 cm. 3.
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Threo-dibromochalcone. 65. Cinnamic acid (10) CHCIJ 120. 1:2. 2,3-dibromo-3-
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In the case of chalcone Ib, addition of less than 1.25 moles of NBS
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