4H-1-Benzopyran-4-one, 5-hydroxy-3,7-dimethoxy-2-phenyl- synthesis

10synthesis methods

26964-29-4 Synthesis

Yield:70786-48-0 78%

Reaction Conditions:

Stage #1: 3,5,7-trimethoxyflavonewith boron tribromide in dichloromethane at 0 - 20; for 4 h;
Stage #2: with water in dichloromethane;

References:

Lee, Jae In;Park, Se Bin [Bulletin of the Korean Chemical Society,2012,vol. 33,# 4,p. 1379 - 1382] Location in patent:scheme or table

6665-74-3 Synthesis

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