73910-82-4

Upstream product

• 64-17-5 ethanol 
• 623-11-0 1-methyl-4-nitrosobenzene 
• 101422-92-8 3,3-dibromo-6-methyl-2-phenyl-chroman-4-one 
• 29976-75-8 6-methylflavone 
• 29976-82-7 1-(2-hydroxy-5-methylphenyl)-3-phenylpropane-1,3-dione 
• 1450-72-2 5-methyl-2-hydroxyacetophenone 
• 98-88-4 benzoyl chloride 
• 4010-19-9 1-(2-benzoyloxy-5-methylphenyl)-ethanone 

Downstream Products

• 4010-51-9 2-benzoyl-5-methylbenzofuran-3-ol 
• 5465-05-4 2-benzoyl-5-methyl-benzofuran-3-one 

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.

New synthesis of 3-bromoflavones via bromination of 1-(2-hydroxyphenyl)-3- arylpropane-1,3-dione by CuBr2, and conversion into 3-aminoflavones

A new synthesis of 3-bromoflavones from 1-(2-hydroxyphenyl)-3-arylpropane- 1,3-dione using CuBr2 is described. The usefulness of 3-bromoflavone as a precursor of 3-aminoflavone is also described. Copyright

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.