发明名称 |
An application and method for the production of N-cyclic and N,N'-dicyclic ureas |
摘要 |
A process for the dissolution of chemical compounds by use of ureas in which at least one of the urea's two nitrogen atoms is part of a non-aromatic ring which can be broken by an oxygen or sulphur atom as a chemical solvent, and a method of producing tri- or tetraalkylated ureas or bis ureas wherein at least one of the urea's nitrogen atoms is part of a non-aromatic ring which can be broken by an oxygen or sulphur atom by means of dialkylating the -NH2 group of a urea with an alkene or alkene arylene alkene dihalogenide, disulphonate or dihydrogen sulphonate in the presence of a solid base and a phase-transfer catalyst. |
申请公布号 |
ZA9400441(B) |
申请公布日期 |
1994.09.01 |
申请号 |
ZA19940000441 |
申请日期 |
1994.01.21 |
申请人 |
CHEMIE LINZ GESELLSCHAFT MBH. |
发明人 |
KURT ALFRED HACKL;MARKUS ROSSLER;MARTIN MULLNER;GERHARD STERN |
分类号 |
B01J31/02;C07D263/04;C07D265/06;C07D277/04;C07D295/08;C07D295/108;C07D295/215;C07D401/06;C07D403/06;C07D413/06;C07D417/06 |
主分类号 |
B01J31/02 |
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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