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Chemcial Industry and Engineering 2001, Vol. 18 Issue (1) :40-43    DOI:
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Cyclization of ��-Hydroxyethylenediamine to Piperazine
CHEN Li\|gong,SONG Yun,XU Zheng\|shuang,WANG Duo\|lu,MENG Yi (School of Chemical Engineering,Tianjin University,Tianjin 300072,China)
(School of Chemical Engineering,Tianjin University,Tianjin 300072,China

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Abstract The cyclization of ��\|hydroxyethylenediamine in the presence of catalytic hydrogenation was investigated in the present paper.Several Cu\|Containing catalysts were prepared and examined for this cyclization.Toluene was employed as solvent to increase the reaction selectivity.The other parameters were optimized.Thus,in the presence of Cu/��\|Al\-2O\-3 and Hydrogen(3.0MPa),��\|hydroxyethylenediamine in toluene,180�桫190��,was found to undergo effective cyclization to afford piperazine in 85% yield.
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Received 2001-01-15; published 2001-01-15
Cite this article:   
CHEN Li\|gong,SONG Yun,XU Zheng\|shuang,WANG Duo\|lu,MENG Yi .Cyclization of ��-Hydroxyethylenediamine to Piperazine[J]  Chemcial Industry and Engineering, 2001,V18(1): 40-43
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