申请人:——
公开号:US20020038059A1
公开(公告)日:2002-03-28
A process for purifying alkenyl compounds having a divalent or trivalent heteroatom in the &agr;-position relative to the double bond by distillation comprises carrying out at least two distillations in which the purified alkenyl compounds are obtained from the gas phase by condensation, where the time between the first distillation after the synthesis of the alkenyl compounds and at least one further distillation is at least one day and the purified alkenyl compounds have an APHA color number of <30.
一种用蒸馏法纯化α-位于双键旁的含二价或三价杂原子的烯基化合物的方法,包括进行至少两次蒸馏,其中通过冷凝从气相中获得纯化的烯基化合物,第一次蒸馏后至少一次进一步蒸馏的时间至少为一天,纯化的烯基化合物的APHA色数小于30。