Partial Alkylation of 5,6-Dihydroxycoumarin : Synthesis of 6-Hydroxy-5-methoxy- and 5-Hydroxy-6-methoxy-coumarins
Partial methylation of 5,6-dihydroxycoumarin (II) gives 6-hydroxy-5-methoxycoumarin (III).The isomeric 5-hydroxy-6-methoxycoumarin (I) is obtained by partial benzylation of II followed by methylation and final catalytic debenzylation.The melting points of
Ahluwalia, V. K.,Khanna, Manjula,Rani, Nimmi
p. 343 - 344
(2007/10/02)
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