117110-87-9

Upstream product

• 90814-87-2 2,2'-dihydroxy-3,3'-dibromo-5,5'-di-tert-butylbiphenyl-2,2'-diol 
• 22385-96-2 5,5'-di-tert-butyl-2,2'-dihydroxybiphenyl 
• 117110-96-0 3-bromo-5,5'-di-t-butylbiphenyl-2,2'-diol 

Downstream Products

• 117110-92-6 4-(2,3-diamino-5-t-butylphenyl)-6-t-butyl-2,1,3-benzothiadiazole 
• 117110-85-7 1,8-diamino-9H-carbazole 

Relevant academic research and scientific papers

Sulphur Nitride in Organic Chemistry. Part 17. Preparation of 1,8-Diaminocarbazole

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) .