Silica-supported phosphorus chloride: An efficient and recyclable catalyst for Beckmann rearrangement of ketoximes and dehydration of aldoximes under microwave irradiation

摘要

Silica-supported phosphorus chloride has been proved to be an efficient and recyclable catalyst for Beckmann rearrangement of a variety of ketoximes and dehydration of various aldoximes in anhydrous THF under microwave irradiation. This protocol has advantages of high conversion, high selectivity, short reaction time, no environmental pollution, and simple work-up procedure.