基本解释：1,4-二溴丁烷
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Polymer supported quaternary ammonium was synthesized from polystyrene supported diethylene glycol with 6% crossing linkage,through grafting 1,4-dibromobutane,followed by reaction with tributyl amine.以交联度为6%的聚苯乙烯固载二甘醇树脂为原料,经接枝1,4-二溴丁烷,然后与三丁胺反应,合成季铵盐型的三相相转移催化剂。
Used 1,4-butanediol and the hydrobromic acid synthesized with solid superacid catalyst SO~(2-)4/MXOY to catalysis 1,4-dibromobutane.以1,4-丁二醇和氢溴酸为原料,在SO42-/MxOy固体超强酸的催化下合成1,4-二溴丁烷。
An excess of 1,4-dibromobutane reacted with trimethylamine aqueous solution in THF/MeOH at 0～20 ℃,after that the solvent and 1,4-dibromobutane were recovered,4-bromobutyltrimethylammonium bromide and the by-product bisquat salt were separated by using the fractional crystallization.三甲胺水溶液与过量1,4-二溴丁烷在0~25℃反应,回收溶剂和过量1,4-二溴丁烷后,采用分步结晶的方法将产物4-溴丁基三甲基溴化铵与副产物双季铵盐分开,再经重结晶可得到纯产品,进一步用元素分析、IR、1HNMR确证。
