80-42-2

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Ethyl 5-methylisoxazole-4-carboxylate is quaternized with propyl benzenesulfonate and the resulting quaternary salt is reacted with hydroxylamine to give the title compound according to the procedure of A. Alberola et al., Synthesis 203 (1988).