<style face="normal" font="default" size="100%">Alum: an efficient catalyst for one-pot synthesis of alpha-aminophosphonates</style>

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<style face="normal" font="default" size="100%">Alum: an efficient catalyst for one-pot synthesis of alpha-aminophosphonates</style>

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<style face="normal" font="default" size="100%">Alum catalyzed convenient synthesis of quino [2,3-b][1,5]benzoxazepine alpha-aminophosphonate derivatives</style>