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2,2′-二苯并咪唑的合成与提纯

Synthesis via a modified method and purification of 2,2′-bibenzimidazole
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摘要 对Vyas法合成2,2′-二苯并咪唑进行了有效的改进。采用冰醋酸取代使用较广的乙二醇作为提纯溶剂,效果更优。采用DSC和TG分析技术,更为准确地确定了标题化合物的熔点为411℃,并同时首次发现其大约在365℃以后存在显著的升华现象。 In this paper, the method of Vyas for synthesizing 2,2＇-bibenzimidazole was effectively modified. Ethylene glycol which was widely used as the solvent for purifying 2,2＇-bibenzimidazole via recrystallization was substituted by glacial acetic acid, resulting in a more excellent purifying effect. The more accurate melting point 411 ℃ of 2, 2＇-bibenzimidazole was measured by DSC and TG, and for the first time the sublimation of this compound at 365 ℃ was discovered.
作者 唐怀军 张志国 从长杰 张克立
机构地区 武汉大学化学与分子科学学院
出处 《化学试剂》 CAS CSCD 北大核心 2007年第12期733-735,共3页 Chemical Reagents
关键词 2 2'-二苯并咪唑 提纯 熔点 DSC TG 升华 2, 2＇-bibenzimidazole purification melting point DSC TG sublimation
分类号 O626.23 [理学—有机化学]
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参考文献12

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二级参考文献7

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化学试剂
2007年 第12期

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