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出 处:《北京师范大学学报(自然科学版)》1997年第1期107-111,共5页Journal of Beijing Normal University(Natural Science)
摘 要:在碳酸氢钠存在下,用一步法以苯并咪唑、甲醛、盐酸羟胺为原料,合成了N,N-双-(苯并咪唑基甲基)羟胺(Ⅰ);苯并咪唑、甲醛与甲胺在甲苯溶液中回流分水,得到N,N-双-(苯并咪唑基甲基)甲胺(Ⅱ).用N,N-双-(苯并咪唑基甲基)羟胺与格氏试剂反应合成了4个N,N-双取代羟胺(Ⅲ).用N,N-双-(苯并咪唑基甲基)羟胺与丙烯酸甲酯、丙烯酸乙酯或反-丁烯二酸二乙酯发生1,3-偶极环加成反应,得到2-(苯并咪唑基甲基)异唑啉-5-羧酸酯或2-(苯并咪唑基甲基)异唑啉-4,5-二羧酸酯.用IR,1HNMR和元素分析确定了它们的结构.In the presence of sodium bicarbonate, the one step reaction of benzimidazole,formaldehyde and hydroxylamine hydrochloride was studied. New N, N- bis- forbenzimidazolylmethyl) hydroxylamine (Ⅰ) was obtained in high yield. The Mannich reaction ofbenzimidazole, formaldehyde and methylamine, under the condition of refluxing in toluene solution and remove water, form the new compound N,N- bis - (benzimidazolylmethyl) methylamine (Ⅱ). (Ⅰ) react with the Grignard reagents of alkyl brocade to obtain four N,N -disubstitutedhydroxylamines. The 1,3 - dipolar addition reaction of (Ⅰ) with arylic esters or fumaric ester werealso studied to obtain three new 2 - benzimidazolylmethylisoxazoline - 5 - carboxylate esters or4,5- dicarboxylate diester. Their structures are deduced by IR, 1HNMR and elemental analysis.
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