发明名称 |
PROCESS FOR THE PREPARATION OF N,N-DISUBSTITUTED MONO- AND OLIGOURETHANES |
摘要 |
N,N-disubstituted monourethanes and oligourethanes are produced by reacting (a) N-aliphatically and/or N-cycloaliphatically and/or N-araliphatically substituted monourethanes and/or oligourethanes with an alkylating agent in the presence of a solid alkali metal hydroxide. No solvent need by employed but if a solvent is used, that solvent should be an aprotic organic solvent. The alkali metal hydroxide must be used in an equivalent amount. A phase transfer catalyst may optionally be employed. The N,N-disubstituted urethanes obtained by this process are useful in the production of dyes, pharmaceutical products and thermostable synthetic materials.
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申请公布号 |
US5130457(A) |
申请公布日期 |
1992.07.14 |
申请号 |
US19870025910 |
申请日期 |
1987.03.16 |
申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
SANDERS, JOSEF;DIETERICH, DIETER |
分类号 |
C07C269/02;C07C67/00;C07C239/00;C07C271/06 |
主分类号 |
C07C269/02 |
代理机构 |
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代理人 |
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