发明名称 |
Continuous process for the preparation of sulfonylisocyanates |
摘要 |
The invention relates to an improved process for the preparation of a compound of the formula R1-X-SO2-NCO in which X is O or NR2, R1 is alkylsulfonyl or phenyl which is optionally substituted by Hal, alkyl and/or alkoxy, and R2 is alkyl, by reacting R1XH with ClSO2NCO to give the compound R1XCONHSO2Cl followed by a rearrangement reaction, which comprises carrying out the process continuously in the presence or absence of an inert solvent.
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申请公布号 |
US5294741(A) |
申请公布日期 |
1994.03.15 |
申请号 |
US19920839790 |
申请日期 |
1992.02.21 |
申请人 |
HOECHST AKTIENGESELLSCHAFT |
发明人 |
SCHLEGEL, GUENTER;LACHHEIN, STEPHEN;BERGER, HARALD |
分类号 |
C07C303/40;C07C311/65;(IPC1-7):C07C311/65 |
主分类号 |
C07C303/40 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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