发明名称 |
PREPARATION OF 1,4-DIKETOPYRROLO-(3,4-C)-PYRROLES |
摘要 |
A process for the preparation of 1,4-diketopyrrolo-[3,4-c]pyrroles of the formula <IMAGE> (I) wherein each of R1 and R2 independently of the other is an isocyclic aromatic or non-basic heterocyclic aromatic radical, which process comprises reacting 1 mole of the compound of formula <IMAGE> (II) wherein M is a metal atom, Z is alkyl or aryl, X is halogen or acetate, and m is a value from 0 to 2, with 1 mole of a compound of the formula YCH2COOZ (III) wherein Y is halogen, and with 1 mole of a nitrile of the formula R1-CN (IV) or R2-CN (V) in an organic solvent and at elevated temperature, and isolating the compound of formula I. The compounds obtained according to the invention are suitable for pigmenting organic material of high molecular weight. |
申请公布号 |
DE3367931(D1) |
申请公布日期 |
1987.01.15 |
申请号 |
DE19833367931 |
申请日期 |
1983.07.04 |
申请人 |
CIBA-GEIGY AG |
发明人 |
CASSAR, LUIGI, DR.;IQBAL, ABUL, DR.;ROCHAT, ALAIN CLAUDE, DR. |
分类号 |
C07D487/04;C07F3/00;C08K5/3415;C09B57/00;(IPC1-7):C09B57/00;C08K5/34 |
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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