Flavonoids, 45 . A General and Efficient Synthesis of Hydroxyflavones and -chromones
An efficient and versatile method for the synthesis of flavones hydroxylated in either ring A or B and of chromones hydroxylated in is described.This approach is based on the acidic resin-promoted cyclodehydration and simultaneous deprotection of methoxymethoxylated 1-(2-hydroxyphenyl)propane-1,3-diones easily available by either the Baker-Venkataraman rearrangement or the Claisen condensation. - Key words: Amberlyst 15 / Baker-Venkataraman rearrangement / Claisen condensation / hydroxychromone / hydroxyflavone / methoxymethyl protection
Patonay, Tamas,Molnar, Denes,Muranyi, Zoltan
p. 233 - 242
(2007/10/02)
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