4987-96-6Relevant articles and documents
Process for the preparation of derivatives of tetraaminobenzene
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Page/Page column 18-19, (2012/04/04)
A process is provided for preparing complexes of 1,2,4,5-tetraminobenzene with an aromatic diacid. The process design eliminates costly intermediate drying and recrystallization steps. Handling of solid materials with possible skin sensitizing properties and toxicity is avoided, thereby eliminating human and environmental exposure.
INTEGRATED PROCESSES FOR THE PREPARATION OF HETEROCYCLIC AROMATIC POLYMER PRECURSORS
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Page/Page column 24-25, (2012/07/13)
An integrated process is provided for efficiently preparing 2, 4, 5-triaminothiophenol, starting; high purity salts thereof; and complexes of 2, 4, 5-triaminothiophenol with aromatic diacids, which are precursors for making polymer for high performance fibers. The process design eliminates several costly intermediate drying and recrystallization steps. The handling of solid materials with possible skin sensitizing properties and toxicity is avoided, thereby eliminating human and environmental exposure.
Process for the synthesis of 1,3-diamino-4,6-dinitrobenzene
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Page/Page column 6, (2011/12/13)
A process is provided for the preparation of 1,3-diamino-4,6-dinitrobenzene by amination of 1,3-dihalo-4,6-dinitrobenzene. The presence of water advantageously results in a highly pure product, free or essentially free of glycol ether impurities.