发明授权
- 专利标题: Process for the production of 4-chloro-butanals
- 专利标题(中): 生产4-氯丁醛的方法
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申请号: US921474申请日: 1986-10-22
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公开(公告)号: US4691062A公开(公告)日: 1987-09-01
- 发明人: Juan Andrade , Gunter Prescher , Klaus Kohler
- 申请人: Juan Andrade , Gunter Prescher , Klaus Kohler
- 申请人地址: DEX Frankfurt am Main
- 专利权人: Degussa Aktiengesellschaft
- 当前专利权人: Degussa Aktiengesellschaft
- 当前专利权人地址: DEX Frankfurt am Main
- 优先权: DEX3537815 19851024
- 主分类号: C07C47/14
- IPC分类号: C07C47/14 ; C07C45/00 ; C07C45/42 ; C07C45/51 ; C07C67/00
摘要:
4-chloro-butanals of the formula ##STR1## where R is hydrogen or a straight or branched chain alkyl group of 1 to 4 carbon atoms are produced by reacting the corresponding 1,1-dimethoxy-4-hydroxybutane at a temperature between -20.degree. and +80.degree. C. in the presence of triphenylphosphine with carbon tetrachloride and hydrolyzing the 1,1-dimethoxy-4-chloro-butane obtained in acid medium.
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