p-Toluenesulfonic acid → HCID 9879759, compound

Participants

Reaction Steps

Cyclohexylamine (5 mmol, 0.5 g), 3-oxo-2-(2-oxo-2-phenyl-ethyl)-butyric acid ethyl ester (5 mmol, 1.2 g) and tosic acid (0.1 g) were combined in ethanol, then heated under reflux. The resulting residue was resuspended in ether, then washed with water and brine. The organic layer was dried over MgSO4, and the solids were separated and the solvents removed under vacuum. Purification of the oil yielded the named product, 1H-NMR (CDCl31 ppm): 1.0 bm (2H), 1.23 t (3H), 1.6-1.7 bm (8H), 2.66 s (3H), 4.16 q (2H), 6.39 s (1H), and 7.25 bm (5H).

Provenance & Evidence