Abstract A green and convenient approach to the synthesis of a series of 4, 7-diaryl-5-oxo- 4H-benzo [b] pyran derivatives from appropriate aromatic aldehydes and 5-aryl-1, 3- cyclohexanedione with malononitrile in the presence of dilute HCl as catalyst (30 mmol/L) is described. This method provides several advantages such as environmental friendliness, low cost, high yields, and simple work up procedure. The structures of all compounds ...
[Kesten, Stephen J.; Degnan, Margaret J.; Hung, Jocelyn; McNamara, Dennis J.; Ortwine, Daniel F.; et al. Journal of Medicinal Chemistry, 1992 , vol. 35, # 19 p. 3429 - 3447]
