Dialkylaminoalkyl 6-nitrobenzisoxazole-3-carboxylates, when heated in toluene solution, undergo rearrangement to the corresponding 2-(dialkylaminoalkoxy)-4-nitrobenzonitriles. Similarly, an alkyl 6-nitrobenzisoxazole-3-carboxylate, in the presence of a tertiary amine, forms the corresponding 2-alkoxy-4-nitrobenzonitrile and a quarternary ammonium salt. Dimethylaminoethyl 6-nitrobenzisoxazole-3-carboxylate is exceptional, in that self- ...
