80472-48-6Relevant academic research and scientific papers
Biginelli reaction on 4-oxo-4H-1-benzopyran-3-carboxaldehyde - A search for reaction pathway
Bandyopadhyay, Chandrakanta,Nag, Partha Pratim,Sur, Kumar Ranabir,Patra, Ranjan,Banerjee, Subhabrata,Sen, Arunabha,Ghosh, Tapas
, p. 132 - 136 (2007/10/03)
On heating a mixture of 3-formylchromone 1, active methylene compound 2 or 3 and urea (4) In AcOH produces dihydropyrimidinones 10 or 11, whereas use of thiourea in place of urea produces 1,3-thiazine derivative 14 or 15 and the above reactions pass through the Knoevenagel condensate 5 or 6.
