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V-Ray 3.0 for 3ds Max 2014: VRay 3.0 for 3ds Max 2014-win64.rar (Medium).The present invention relates to an improved method for producing diazoimide derivatives having a high safety and a high purity. More specifically, the present invention relates to a method for producing diazoimide derivatives having a high safety and a high purity by allowing a diazonium salt to react with a diazo compound in the presence of an azo-containing color developer in an organic solvent.
It is very important to produce diazoimide derivatives having a high safety and a high purity in the production of light-sensitive color photographic materials, and this requirement cannot be met by the prior art.
In general, diazo compounds are decomposed by thermal decomposition, catalytic decomposition or light to produce a diazonium salt, and the diazonium salt is allowed to react with an aromatic nucleophilic compound to produce a diazoimide derivative having a high safety.
In producing diazoimide derivatives by these methods, it is necessary to maintain high temperatures and to maintain the reaction for a long time, and diazoimide derivatives having a high safety and a high purity cannot be obtained.
The diazoimide derivatives having a high safety and a high purity are generally separated from unreacted diazo compounds and the diazonium salts, and these are used as intermediates for the production of photographic light-sensitive materials.
The diazoimide derivatives having a high safety and a high purity obtained by these methods are not very much utilized.
There is known a method which comprises adding a specific compound to a diazonium salt solution to suppress decomposition of the diazonium salt (for example, U.S. Pat. Nos. ac619d1d87
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