申请人:Huels Aktiengesellschaft
公开号:US04987268A1
公开(公告)日:1991-01-22
Monoalkylethers of alkyleneglycols and oligoalkyleneglycols are reacted completely with terminally unsaturated alkenyl halides to form terminally mono unsaturated glycolethers as product, wherein initially a complete reaction to the corresponding alcoholate takes place with only one equivalent of alcoholate former, such as alkali metal alcoholate or hydroxide, and two equivalents of glycolmonoether, then the alcoholate is reacted with one equivalent of alkenyl halide, whereupon a mixture of the desired product and the glycolmonoether of the alkali metal halide is filtered or distilled off, then this mixture is reacted with the second equivalent of the alcoholate former, whereupon the recovery of the product takes place by distillation from the reaction mixture and then, after addition of a further equivalent of glycolmonoether to the residue from the product recovery, the reaction of the first and the subsequent steps is repeated.
利用单烷基醚与多烷基醚与末端不饱和烯基卤代烃完全反应,得到末端单不饱和烯基醚作为产物。首先,只有一当量的醇酸盐前体(如碱金属醇酸盐或氢氧化物)和两当量的醇醚发生完全反应,形成相应的醇酸盐。然后,醇酸盐与一当量的烯基卤代烃反应,生成所需产物和碱金属卤代醇醚的混合物,该混合物经过过滤或蒸馏后,再与第二当量的醇酸盐前体反应,从反应混合物中蒸馏出产物,然后向产物回收残留物中加入更多的醇醚,重复第一步和随后的步骤。