| 发明名称 |
Organic solvent-free process for the preparation of 2-(2-nitrophenylazo)phenols |
| 摘要 |
Provided is a novel one-pot, organic solvent-free process for the preparation of 2-(2-nitrophenylazo) substituted phenols. The 2-(2-nitrophenylazo) substituted phenols are precursors for hydroxyphenylbenzotriazole UV absorbers.
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| 申请公布号 |
US2005053562(A1) |
申请公布日期 |
2005.03.10 |
| 申请号 |
US20040497621 |
申请日期 |
2004.05.27 |
| 申请人 |
PASTOR STEPHEN DANIEL;SUHADOLNIK JOSEPH;JUDD DEBORAH;WOOD MERVIN GALE |
发明人 |
PASTOR STEPHEN DANIEL;SUHADOLNIK JOSEPH;JUDD DEBORAH;WOOD MERVIN GALE |
| 分类号 |
C07C245/08;C07D249/20;C09B29/12;C09B41/00;(IPC1-7):A61K7/021;C09B29/00 |
主分类号 |
C07C245/08 |
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