Published November 30, 1969 | Version v1

Studies in the Synthesis of Coumarino-α-pyrones and Furocoumarins Part IV. Synthesis of Alkyl-psoralenes

Description

7-Aeyloxy-4-alkyl or aryl-8-methylcoumarin on Fries migration, afforded 7-hydroxy-6-acy1-4.alkyl or aryl-8-methylcoumasin, which on condensation with ethyl bromoacetate, followed by hydrolysis and subsequent cyclisation yielded 4-alkyl or aryl-4',8-alkylpsoralenes (I).

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