Abstract
The bromination of condensed chromen-2-ones is carried out. The influence of medium on the reaction occurrence has been studied. In the acidic acid solution aromatization of the 4H-pyrane fragment or hydrogen atom substitution at the tertiary carbon atom takes place. In chloroform, addi tion of bromine by the double bond occurs. Mixture of tetrachloromethane and propanol-2 promotes the intermolecular dehydration with the formation of ether bond.
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