94127-11-4

Upstream product

• 92683-72-2 N-(p-toluenesulfonyl)-3-nitrocarbazole 
• 3077-85-8 3-Nitro-carbazol 
• 86-74-8 9H-carbazole 

Downstream Products

• 855659-90-4 {[9-(toluene-4-sulfonyl)-carbazol-3-ylamino]-methylene}-malonic acid diethyl ester 
• 1454710-83-8 C₃₇H₃₂N₂O₄S₃ 
• 856967-24-3 4-oxo-6-(toluene-4-sulfonyl)-4,6-dihydro-1H-pyrido[3,2-b]carbazole-3-carboxylic acid ethyl ester 
• 856967-21-0 1-oxo-7-(toluene-4-sulfonyl)-4,7-dihydro-1H-pyrido[2,3-c]carbazole-2-carboxylic acid ethyl ester 
• 94127-20-5 3-(N-methyltosylamino)-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 
• 94127-18-1 3-(tosylamino)-9-tosylcarbazole 

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.

N-METHYL DERIVATIVES OF 3-AMINOCARBAZOLE

Methylation of 3-aminocarbazole in presence of sodium hydrogencarbonate yields carbazolyl-3-trimethylammonium iodide, in alkaline media the fourth methyl group is introduced. 3-(N,N-Dimethylamino)-carbazoles were obtained from corresponding methiodides by lithium aluminium hydride reduction or by thermal decomposition.Synthesis of 3-(N-methylamino)-carbazole via tosylamide failed because of 3-(N-methyltosylamino)-9-tosylcarbazole cleaved only one sulfonamide bond.The method involving formylation of 3-aminocarbazole and reduction of the amide gave satisfactory results.