p-Toluenesulfonic acid → HCID 86586362, compound

Participants

Reaction Steps

To a solution of 4-n-butanoyl-3,5-di-tert-butylbenzaldehyde (9.63 g, 0.032 mol) in benzene (200 mL) was added tert-butylhydroxylamine (3.52 g, 0.040 mol) and p-toluenesulfonic acid (0.100 g). Using a Dean-Stark trap, the resulting solution was refluxed until no more aldehyde was detected by TLC (Rf=0.30 for product and 0.91 for starting material using 3:1 hexanes/EtOAc). The solvent was removed in vacuo and the residue was crystallized from EtOAc and hexanes to afford the titled compound (50.2% yield) as a white solid, m.p. 216.9–236.5° C.

Provenance & Evidence