Acetone Cyanohydrin → HCID 67065613, compound

Participants

Reaction Steps

To 1-cyclohexyl-1,6-dihydro-6-oxo-2-phenyl-5-pyrimidinecarboxylic acid (i.e. the product from Example 11, Step B) (0.58 g, 1.5 mmol) in 10 mL of dichloromethane was added oxalyl chloride (0.490 g, 3.9 mmol) and one drop of N,N-dimethylformamide. The reaction was stirred at ambient temperature for 2 h and then concentrated under reduced pressure. The crude oil was then redissolved in 10 mL of dichloromethane and then treated with 1,3-cyclohexanedione (0.24 g, 2.1 mmol) and triethylamine (0.39 g, 3.8 mmol) stirred for 30 min, then treated with a catalytic amount of 2-hydroxy-2-methyl-propanenitrile (0.015 g, 0.15 mmol) and triethylamine (0.393 g, 3.8 mmol) and stirred at ambient temperature for 16 h. The reaction mixture was then concentrated under reduced pressure and purified by medium pressure liquid chromatography on silica gel eluting with 0 to 10% methanol in chloroform to provide 0.570 g of the title compound, a compound of the invention, as a solid.

Provenance & Evidence