N-ethyl carbazole

AEC stock solution 0.4 g of 3-amino 9-ethyl carbazole dissolved in 100 ml of N,N dimethyl formamide... 

Another important starting material is 3-amino-N-ethylcarbazol. Carbazol is obtained from hard coal tar and is usually ethylated with ethylbromide or with ethylchloride. Subsequent nitration and reduction affords the required compound. 

The tubingensins A (379) and B (380) showed activity against the widespread crop pest Heliothis zea, and display in vitro anti-viral activity against herpes simplex virus type 1 with IC50 values of 8 and 9 pg/mL, respectively (346) (see Scheme 2.100). Some bis-basic ethers of carbazoles are anti-viral. When tested against Encephala myocarditis viral infection, several N-ethyl substituted bis-basic carbazoles of the general formula 490 were shown to be active (448) (Scheme 4.9). 

It was known as long ago as 1923 that carbazole could be more simply alkylated by heating with potassium hydroxide than by the prior formation of the potassium salt. At that time it was shown that carbazole itself, as well as the more acidic 3-nitro- and 3-halocarbazoles could be N-methylated, N-ethylated, and N-n-propylated in acetone solution using... 

Rather strange results were obtained when cyanuric chloride was heated at 90 and 100°C, respectively, with 9-ethyl- and 9-phenylcarbazoles. A 1 1 mixture of N-substitution (presumably with loss of the original ethyl group) and C-substitution products were formed in very low yield from 9-ethyl-carbazole and, also in very low yield, mainly 47 from 9-phenylcarbazoIe. " ... 

Ein UberschuB an Acetanhydrid fuhrt zusatzlich zu N-Acylierung. Mit 3,4-Diamino-9-ethyl-carbazol wird regioselektiv 3-Acetyi-6-ethyl-2-methyI-3,6-dihydrn-(imidazo[4,5-c carha o ) (62% Schmp. 1923) gebildet54 ... 

It is interesting that N-ethyl-3-vinyl carbazole 7 polymerises readily by cationic processes and the value of k estimated by initiation with tropylium ion is 2x 104 M-1 sec-1, approximately one order of magnitude lower than that for the closely related N-vinyl carbazole (159). 

AODCST, 2-[4-bis(2-methoxyethyl)amino]benzylidene malononitrile PTPDac-BA2, copolymer, 65% wt N-(4-acryloyloxymethylphenyl)-N -phenyl-N,N -bis(4-methylphenyl)-[ 1,1 -biphenyl]-4,4 -diamine, 35% wt A-butylacetate DOP, dioctyl phthalate DRl-DCTA, 4,4 -di(carbazol-cl-yl)-4"-(2- N-ethyl-N-[4-(4-nitrophenyldzo)phenyl]amine ethoxy)-triphenylamine other abbreviations are defined in the text and Figures, quantum effieieney of mobile charge photogeneration has been estimated where necessary, °a relative static dielectric constant of 3 and a linear electro-optic response have been assumed. 

Fig.24a-e. Examples of bifunctional chromophores for photorefractive applications a N-2-butyl-2,6-dimethyl-4H-pyridone-4-ylidenecyanomethylacetate (2BNCM) b 1,3-dimethyll-2,2lctramethylene-5- nit roben zirnidazoli ne (DTNBl) c 4- (N,N -diphenylamino)- (P )-nitros-tyrene (DPANST) d 4,4 -di(N-carbazolyl)-4"-(2-N-ethyl-4-[2-(4-nitrophenyl)-l-azo]anili-noethoxyl-triphenylamine (DRDCTA) e carbazole trimer... 

Ethyl vinyl ether N-vinyl carbazole Olefin ... 

Synonyms 3-Amino-N-carbazole HCI 3-Amino-9-ethylcarbazole HCI 9-Amino ethyl carbazole hydrochloride... 

A. Desbenemonvemay, P. C. Lacaze, J. E. Dubois, Polaromicrotribometric (PMT) and IR, ESCA, electron-paramagnetic-res spectroscopic study of colored radical films formed by the electrochemical oxidation of carbazoles. 1. Carbazole and N-ethyl, N-phenyl and N-carbazyl derivatives, /oMr a/ of Electroanalytical Chemistry 1981, 129, 229. 

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