40412-67-7

Upstream product

• 108976-66-5 1,5-diphenylpent-1-en-3-ol 
• 5396-91-8 1,5-diphenyl-3-pentanone 
• 40413-12-5 3-Phenyl-3-carboxymethyl-1-oxo-indan 
• 100-52-7 benzaldehyde 
• 538-58-9 1,5-diphenyl-1,4-pentadiene-3-one 
• 3531-22-4 3,3-Diphenylglutarsaeure 
• 3531-27-9 3,3-diphenylglutaric anhydride 
• 40412-25-7 C₁₇H₁₂O₂ 
• 62510-08-1 1,5-diphenyl-1-penten-3-one 
• 2550-26-7 4-Phenyl-2-butanone 

Relevant academic research and scientific papers

Synthesis of spirobiindanes via bis-cyclization reaction of the 1,5-diaryl-3-pentanones catalyzed by heteropoly acids

Bis-cyclization reaction of the 1,5-diaryl-3-pentanones catalyzed by heteropoly acids (HPAs) was examined for the first time, and a series of spirobiindanes were synthesized. 1,5-Diaryl-3-pentanones were refluxed and dehydrated in toluene in the presence of 0.15 equiv of a heteropoly acid to furnish spirobiindanes in moderate to high yield. For the known 4,4′-dibromo-7,7′-dimethoxy-1,1′-spirobiindane, the yield was upgraded from 66% to 80%.