反应详情

A 50-mL single neck round bottom flask was charged with 4-nitrophenyl acetate (2.03 g, 11.2 mmol), 4,4-dimethyl-1,3-cyclohexanedione (2.10 g, 15 mmol) and acetonitrile (15 mL). Then triethylamine (2.5 g, 25 mmol) and acetone cyanohydrin (0.14 mL, 1.5 mmol) were added and the mixture was stirred for 2 hours at ambient temperature. NMR analysis of an aliquot showed that 43% of the starting acetate was still unreacted. The mixture was then refluxed for 2 hours after which time NMR analysis of an aliquot showed no starting acetate remaining.

1. temperatureThe mixture was then refluxed for 2 hours after which time NMR analysis of an aliquot