On December 25, 2018, Cao, Dongdong; Yang, Jianguo; Ying, Anguo; Mo, Hanjie; Chen, Dingben; Chen, Gang published a patent.Category: nitriles-buliding-blocks The title of the patent was Method for preparing trisubstituted 4-aminocarbazole and disubstituted 1-aminodibenzo[b,d]thiophene compound from 3-nitroindole compound or 3-nitrobenzothiophene and 2-(1-arylethylidene)malononitrile. And the patent contained the following:
The title method for preparing trisubstituted 4-aminocarbazole and disubstituted 1-aminodibenzo[b,d]thiophene compound includes adopting 3-nitroindole compound or 3-nitrobenzothiophene and 2-(1-arylethylidene)malononitrile as raw materials, reacting at 50°C for 6-24 h in solvent acetonitrile under the catalysis of triethylamine under the protection of nitrogen gas to obtain the final product. For instance, 1-amino-3-phenyl-2-dibenzothiophenecarbonitrile was prepared from 3-nitro-benzo[b]thiophene and 2-(1-phenylethylidene)-propanedinitrile in 52% yield. The experimental process involved the reaction of 2-(2,3-Dihydro-1H-inden-1-ylidene)malononitrile(cas: 2510-01-2).Category: nitriles-buliding-blocks
The Article related to aminocarbazole aminodibenzothiophene preparation cyclization, Heterocyclic Compounds (One Hetero Atom): Indoles, Indolizines, Carbazoles, and Other Arenopyrroles and other aspects.Category: nitriles-buliding-blocks
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts