117110-91-5Relevant academic research and scientific papers
Sulphur Nitride in Organic Chemistry. Part 17. Preparation of 1,8-Diaminocarbazole
Takahasi, Kazufumi,Eguchi, Hisao,Shiwaku, Sohgo,Hatta, Taizo,Kyoya, Eiji,et al
, p. 1869 - 1874 (2007/10/02)
Tetrasulphur tetranitride (1) reacted with 5,5'-di-t-butylbiphenyl-2,2'-diol (3a-d) to give 4-(2-hydroxyphenyl)-2,1,3-benzothiadiazole (4a) and (4c), bi-2,1,3-benzothiadiazol-4-yl (5), and benzofurano-2,1,3-benzothiadiazole (6), the yields of which were dependent upon the ortho substituent of (3) and an equimolar ratio of (1):(3).Reduction of compound (5) with SnCl2 in acetic acid-concentrated hydrochloric acid gave imidazolyl-thiazole (11), while reduction with Sn in concentrated hydrochloric acid gave tetra-aminobiphenyl (9), which was diazotised to give the bitriazolyl (12).Compound (9) when heated in phosphoric acid give 1,8-diaminocarbazole (2) .
