发明名称 |
Process for preparing diketopyrrolopyrrole derivatives |
摘要 |
This disclosure relates to a process for preparing bis(hydroxymethyl)pyrrolopyrrole compounds of the formula <CHEM> wherein A1 and A2 are aryl radicals, by reacting a 1,4-diketopyrrolopyrrole with formaldehyde or paraformaldehyde. The compound of formula (II) can be isolated or further reacted in a one pot synthesis to yield a compound of the formula <CHEM> wherein B1 and B2 are organic radicals.e
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申请公布号 |
EP0811625(A2) |
申请公布日期 |
1997.12.10 |
申请号 |
EP19970810324 |
申请日期 |
1997.05.27 |
申请人 |
CIBA SPECIALTY CHEMICALS HOLDING INC. |
发明人 |
HENDI, SHIVAKUMAR BASALINGAPPA |
分类号 |
C07D487/04;C07D519/00;C09B57/00;C09B67/20;(IPC1-7):C07D487/04 |
主分类号 |
C07D487/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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