| 发明名称 |
Synthesis of 6-(2-hydroxyphenyl)-3(2H)-pyridazinones from trihalocarbinols |
| 摘要 |
A new synthesis for the preparation of 6-(2-hydroxyphenyl)-3-pyridazinones whose key reaction is cyclizing a 1,1,1-trihalo-2-hydroxy-4-(2-hydroxyphenyl)-1-butanone with hydrazine. 6-(2-Hydroxyphenyl)-3-pyridazinones are important intermediates for preparing medicinally active compounds.
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| 申请公布号 |
US4152517(A) |
申请公布日期 |
1979.05.01 |
| 申请号 |
US19770843371 |
申请日期 |
1977.10.19 |
| 申请人 |
SMITHKLINE CORP |
发明人 |
LEVINSON, SIDNEY H;MENDELSON, WILFORD L |
| 分类号 |
C07C45/71;C07C45/72;C07C45/82;C07C49/82;C07D237/14;(IPC1-7):C07D237/14 |
主分类号 |
C07C45/71 |
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