69342-62-7

Upstream product

• 22422-16-8 α-bromomethyl styryl cetone 
• 78600-92-7 Triphenyl-cinnamoylmethyl-phosphonium 
• 78600-82-5 3,4-Dimethyl-5-[(E)-2-oxo-4-phenyl-but-3-en-(E)-ylidene]-5H-furan-2-one 
• 122-57-6 1-Phenylbut-1-en-3-one 
• 13527-03-2 cinnamoylmethylenetriphenylphosphorane 

Relevant academic research and scientific papers

Synthesis of Calythrone and Related Cyclopentene-1,3-diones via Rearrangement of 4-Ylidenebutenolides

Treatment of 4-ylidenebutenolides with sodium methoxide in methanol results in rearrangement to the corresponding cyclopentene-1,3-diones in high yield.The general method is applied in a synthesis of calythrone from Calythrix tetragona, an