Abstract
Various diethyl 3‐arylisoxazole‐4,5‐dicarboxylates were efficiently prepared in good to moderate yields by the successive treatment of benzylic chlorides and alkyl p‐tosylates with N‐methylmorpholine N‐oxide (NMO) and then hydroxylamine hydrochloride and potassium carbonate followed by Oxone® and diethyl acetylenedicarboxylates. This one‐pot proccess was carried out under mild, transition‐metal‐free conditions.
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