35947-90-1

Upstream product

• 29976-77-0 6-methyl-4'-methoxyflavone 
• 64-17-5 ethanol 
• 623-11-0 1-methyl-4-nitrosobenzene 
• 101602-24-8 3,3-dibromo-2-(4-methoxy-phenyl)-6-methyl-chroman-4-one 
• 29976-81-6 2-anisoyloxy-5-methylacetophenone 
• 29976-84-9 1-(2-hydroxy-5-methylphenyl)-3-(4-methoxyphenyl)propane-1,3-dione 

Downstream Products

• 4010-47-3 (3-hydroxy-5-methyl-benzofuran-2-yl)-(4-methoxy-phenyl)-ketone 
• 36695-31-5 (3-hydroxy-5-methyl-benzofuran-2-yl)-(4-methoxy-phenyl)-methanone 

Relevant academic research and scientific papers

An efficient synthesis of 3-bromoflavones under solvent free conditions using grinding technique

Selective bromination of 1-(2-hydroxyphenyl)-3-phenylpropane- 1,3-diones has been carried out with ammonium bromide and ammonium persulphate at room temperature using grinding technique under solvent free conditions to give 2-bromo derivatives which on cyclodehydration with p-toluenesulphonic acid under grinding conditions give 3-bromoflavones. Also, flavones on bromination using above mentioned conditions give 3-bromoflavones directly.

Selective halogenation of 1-(2-hydroxyphenyl)-3-phenylpropane-1,3-diones using phase transfer catalysis and synthesis of 3-chloro- and 3-bromo-flavones

Selective chlorination and bromination of 1-(2-hydroxyphenyl)-3-phenylpropane-1,3-diones have been achieved by their reaction with ammonium chloride/ammonium bromide and hydrogen peroxide in biphase medium using phase transfer catalysis.