| 发明名称 |
Process for the preparation of pure 4,6-dihloropyrimidine |
| 摘要 |
Process for the preparation of pure 4,6-dichloropyrimidine by reaction of 4,6-dihydroxypyrimidine with an excess of phosphorus oxychloride at 20 DEG C. up to reflux temperature, in the presence of a trialkylamine as acid scavenger and catalyst.
|
| 申请公布号 |
US5723612(A) |
申请公布日期 |
1998.03.03 |
| 申请号 |
US19960657301 |
申请日期 |
1996.06.03 |
| 申请人 |
DSM CHEMIE LINZ GMBH |
发明人 |
HUBER, WOLFGANG;SCHWARZ, FRANZ THOMAS;HEU, FERDINAND |
| 分类号 |
C07D239/30;(IPC1-7):C07D239/02 |
主分类号 |
C07D239/30 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
