51079-23-3

Upstream product

• 104387-27-1 3-Bromo-2-[(E)-2-(4-methoxy-phenyl)-vinyl]-6-methyl-chromen-4-one 
• 51168-09-3 (Z)-3-(4-Methoxy-phenyl)-acrylic acid 2-acetyl-4-methyl-phenyl ester 
• 104387-21-5 (E)-1-(2-Hydroxy-5-methyl-phenyl)-5-(4-methoxy-phenyl)-pent-4-ene-1,3-dione 
• 104387-35-1 (E)-2-Bromo-1-(2-hydroxy-5-methyl-phenyl)-5-(4-methoxy-phenyl)-pent-4-ene-1,3-dione 
• 104387-41-9 3-Chloro-2-[(E)-2-(4-methoxy-phenyl)-vinyl]-6-methyl-chromen-4-one 

Relevant academic research and scientific papers

Reactivity of 1,5-Disubstituted-4-pentene-1,3-diones: Part I - Selective Bromination of 1-(2-Hydroxyphenyl)-5-phenyl-4-pentene-1,3-diones

1-(2-Hydroxyphenyl)-5-phenyl-4-pentene-1,3-diones (I) on buffered bromination afford 2-bromo-1-(2-hydroxyphenyl)-5-phenyl-4-pentene-1,3-diones (II) which undergo cyclodehydration with AcOH-H2SO4 to give 3-bromo-2-styrylchromones (III) while with ethanolic

Synthesis and Reactions of 1,5-Disubstituted 4-Pentene-1,3-diones

The title compounds (III) have been synthesised by the base-catalysed Baker-Venkataraman transformation of cinnamoyl and p-methoxycinnamoyl esters (II) of substituted 2-hydroxyacetophenones (I).The cyclodehydration of III with AcOH-H2SO4 affords 2-styrylc