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 preparatio n of 2-(2-nitrophenylazo) substituted phenols. The 2-(2-nitrophenylazo) substituted phenols are precursors for hydroxyphenylbenzotriazole UV absorbe rs.
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申请公布号 |
CA2465398(A1) |
申请公布日期 |
2003.06.12 |
申请号 |
CA20022465398 |
申请日期 |
2002.11.26 |
申请人 |
CIBA SPECIALTY CHEMICALS HOLDING INC. |
发明人 |
WOOD, MERVIN GALE;JUDD, DEBORAH;SUHADOLNIK, JOSEPH;PASTOR, STEPHEN DANIEL |
分类号 |
C07C245/08;C07D249/20;C09B29/12;C09B41/00;(IPC1-7):C09B41/00 |
主分类号 |
C07C245/08 |
代理机构 |
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