92683-72-2

Upstream product

• 3077-85-8 3-Nitro-carbazol 
• 98-59-9 p-toluenesulfonyl chloride 
• 3165-71-7 9-tosyl-9H-carbazole 
• 86-74-8 9H-carbazole 
• 7500-80-3 N-tosyl-5-nitro-<1,1'-biphenyl>-2-amine 
• 1312448-07-9 N-Ts-2-(3'-nitrophenyl)aniline 
• 574-39-0 9-acetylcarbazole 

Downstream Products

• 94127-11-4 3-amino-9-p-toluenesulfonylcarbazole 
• 343588-34-1 3,6-dinitro-9-(toluene-4-sulfonyl)-carbazole 
• 3077-85-8 3-Nitro-carbazol 
• 856967-21-0 1-oxo-7-(toluene-4-sulfonyl)-4,7-dihydro-1H-pyrido[2,3-c]carbazole-2-carboxylic acid ethyl ester 
• 855659-90-4 {[9-(toluene-4-sulfonyl)-carbazol-3-ylamino]-methylene}-malonic acid diethyl ester 
• 856967-24-3 4-oxo-6-(toluene-4-sulfonyl)-4,6-dihydro-1H-pyrido[3,2-b]carbazole-3-carboxylic acid ethyl ester 
• 1454710-83-8 C₃₇H₃₂N₂O₄S₃ 
• 94127-20-5 3-(N-methyltosylamino)-9-tosylcarbazole 
• 94127-18-1 3-(tosylamino)-9-tosylcarbazole 
• 94127-17-0 Dimethyl-[9-(toluene-4-sulfonyl)-9H-carbazol-3-yl]-amine 
• 94127-21-6 3-(N-methyltosylamino)-carbazole 
• 1140-50-7 3-(N,N-dimethylamino)-carbazole 

Relevant academic research and scientific papers

Carbazole N-substituent effect upon DTMA: Stabilizing and photochromic modulating

Dithienylmaleimide derivatives 7-27 were synthesized by introducing N-substituted carbazole for photo-stabilizing purpose, and the structures were fully confirmed. The photochromism and photo-stability were recorded via UV-vis spectra. Only ortho compounds 8-17 with N-substituents on carbazole moiety showed escalated photochromic change, while compound 7 and the para counterparts 18-27 showed no appreciable photochromism. Additionally, compounds 8-18 exhibited good photo-stability except 17 under 254 nm irradiation. The unstability of 17 may probably due to overrunning hindrance. These photochromic patterns indicated that hindrance and electronic effect mutually paid a decisive influence on the photochromism and photo-stability, which potentially exploited a new way to construct novel photochromic materials with regulable and conceivable performance.

Pd-catalyzed intramolecular oxidative C-H amination: Synthesis of carbazoles

A Pd-catalyzed oxidative C-H amination of N-Ts-2-arylanilines under ambient temperature using Oxone as an inexpensive, safe, and easy-to-handle oxidant has been developed. This process represents a green and practical method for the facile construction of carbazoles with a broad substrate scope and wide functional group tolerance.

NITRATION IN THE CARBAZOLE SERIES

Nitration of 9-tosylcarbazole in acetic anhydride solution gives 1-nitro (28percent), 2-nitro (19percent) and 3-nitro (53percent) derivatives.The mixture of the nitro compounds obtained from 9-acetylcarbazole contains 10percent, 48percent and 42percent of the isomers, respectively.Under similar conditions 9-nitrosocarbazole shows a different isomer distribution: 34percent of 1-nitro and 66percent of 3-nitrocarbazole.Nitration of carbazole is a two step process involving formation and rarrangement of 9-nitrocarbazole.The hypothesis was supported by the results of 1,3,6,8-tetrachlorocarbazole nitration and oxidation of 9-nitrosocarbazole and rearrengement of 9-nitrocarbazole in the nitration conditions.