75476-22-1

Upstream product

• 75476-21-0 13,13-Dimethyl-9,10-diphenyl-1,4-dioxa-8-aza-dispiro[4.1.4.3]tetradec-9-en-11-one 
• 74-88-4 methyl iodide 
• 75495-04-4 9,9-Dimethyl-2,3-diphenyl-1-aza-spiro[4.5]dec-2-ene-4,7-dione 

Downstream Products

• 75476-19-6 1,9,9-Trimethyl-2,3-diphenyl-1-aza-spiro[4.5]dec-2-ene-4,7-dione 

Relevant academic research and scientific papers

Reaction of Diphenylcyclopropenone with Primary and Secondary Enaminones. Synthetic and Mechanistic Implications

Diphenylcyclopropenone (1) reacts with the primary and secondary acyclic enaminones 6a-c in toluene at reflux to afford the 1,5-dihydro-2H-pyrrol-2-ones 7a-c in good yield.The reaction of the primary cyclic enaminone 13a produces a 1,5-dihydro-4H-pyrrol-4-one 14, while the secondary cyclic enaminone 13b yields a 2:1 product (16b) as the principal cycloadduct.Mechanisms are discussed.