【摘 要】
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We have demonstrated the direct substitution of 9H-xanthen-9-ol with different nucleophilic reagents such as thiazoles, triazoles,tetrazoles,hydrazines and hydr
【机 构】
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Department of Chemistry,School of Sciences,Ferdowsi University of Mashhad,P.O.Box 91775-1436,Mashhad