-
公开(公告)号:US3607882A
公开(公告)日:1971-09-21
申请号:US3607882D
申请日:1968-02-29
申请人: FRAZ WENGER
发明人: WENGER FRAZ
CPC分类号: C07D323/06
摘要: Acetals such as trioxane which contain impurities are purified by contacting them with an alkali metal ketyl such as one derived from benzophenone and p,p''-diphenyl-benzophenone.