发明名称 |
Synthesis of isocyanate precursors from primary formamides |
摘要 |
A selective process for the production of unsymmetric carbamates and ureas is disclosed. In the process, a primary formamide is reacted with a dialkyl amine or an alcohol in the presence of a Group VIII transition metal catalyst. The unsymmetric carbamates and ureas are useful precursors to isocyanates.
|
申请公布号 |
US5686645(A) |
申请公布日期 |
1997.11.11 |
申请号 |
US19920902615 |
申请日期 |
1992.06.23 |
申请人 |
ARCO CHEMICAL TECHNOLOGY, L.P. |
发明人 |
FARAJ, MAHMOUD K. |
分类号 |
C07C269/00;C07C273/18;C07C275/28;(IPC1-7):C07C261/00;C07C271/00 |
主分类号 |
C07C269/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|