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机构地区:[1]西南师范大学化学系
出 处:《应用化学》1995年第2期20-23,共4页Chinese Journal of Applied Chemistry
基 金:国家自然科学基金资助项目
摘 要:制得了二丁胺甲基膦酸-亚酸氢锆Zr(HPO3)2-x·(O3PCH2NBu2)x·H2O(x=0.8,0.6,0.5,0.4,0.35),用溴化苄季铵化,得部分季铵化产物:溴化节基二丁铵甲基膦酸-二丁胺甲基膦酸-亚磷酸氢锆Zr(HPO3)2-x·(O3PCH2NBu2)x-y·(O3PCH2N-Bu2·CH2Ph·Br-)y·H2O(y<x),用作相转移催化剂,对液/固/液或固/固/液相转移催化的取代、成醚、合成酯及二氯卡宾加成反应均具良好的催化活性。催化剂易回收,回收率为70%~100%,重复使用10次以上无明显失活。Zirconium dibutylaminomethylphosphonate-phosphites Zr(HPO3)2-x·(O3PCH2N-Bu2)x·H2O(ZPDBN-ZP,x=0.8,0.6,0.5,0.4,0. 35)have been prepared for the firsttime. Partly quaternized ZPDBN-ZP with benzylbromide, zirconium(benzyldibutylammo-niomethylphosphonate bromide-dibutylammoniomethylphosphonate-phosphite)Zr(HPO3)2-x·(O3PCH2NBu2)x-y·(O3PCH2N+Bu2PhCH2Br-)y·H2O(ZPBBDB-ZPDBN-ZP,y<x)have been obtained. Heterogeneous PTC reactions of nucleophilic substitution, etherifica-tion,esterification, and addition of dichlorocarbene by using ZPBBDB-ZPDBN-ZP have beencarried out successfully. The catalysts can easily be recovered with recovery of 70%~100%. No obvious loss of the catalytic activity was found after more than ten times repeated use.
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