发明授权
US4948917A Process for the preparation of beta-chloroethylsulfonylaryl isocyanates
失效
制备β-氯乙基磺酰基芳基异氰酸酯的方法
- 专利标题： Process for the preparation of beta-chloroethylsulfonylaryl isocyanates
- 专利标题（中）： 制备β-氯乙基磺酰基芳基异氰酸酯的方法
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申请号： US479660申请日： 1990-02-14
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公开(公告)号： US4948917A公开(公告)日： 1990-08-14
- 发明人: Hans H. Steuernagel
- 申请人： Hans H. Steuernagel
- 申请人地址： DEX Frankfurt am Main
- 专利权人： Hoechst Aktiengesellschaft
- 当前专利权人： Hoechst Aktiengesellschaft
- 当前专利权人地址： DEX Frankfurt am Main
- 优先权： DEX3904592 19890216
- 主分类号： B01J31/02
- IPC分类号： B01J31/02 ; C07B61/00 ; C07C315/04 ; C07C317/32
摘要：
Process for the preparation of .beta.-chloroethylsulfonylaryl isocyanates of the formula (1)Cl--H.sub.2 C--H.sub.2 C--O.sub.2 S--A--NCO (1)wherein A is a phenylene radical, which can contain substituents from the series comprising alkyl(C.sub.1 -C.sub.6), alkoxy(C.sub.1 -C.sub.6), chlorine, bromine and nitro, or a naphthylene radical, by allowing at least 2 moles of phosgene to act on 1 mole of .beta.-hydroxyethylsulfonyl-arylamine of the formula (2)HO--H.sub.2 C--H.sub.2 C--O.sub.2 S--A--NH.sub.2 (2)wherein A has the abovementioned meaning, in the presence of a catalyst at temperatures of about 100.degree. to 200.degree. C., if appropriate in an inert solvent.
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