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Lewis acidic guanidinium ionic liquid(LAGIL) 2c was used as a novel,efficient and recyclable catalyst for aminolysis of epoxides under solvent-free and room temperature conditions,giving the corresponding β-amino alcohols with moderate to excellent regioselectivity(up to 91:9) in high yields(up to 97％).In addition,LAGIL 2c was recycled three times without any loss of catalytic activity and selectivity to the product.