34601-54-2Relevant articles and documents
SYNTHESIS OF tert-BUTYL- ANDD TRIFLUOROACETYL-SUBSTITUTED CARBAZOLES
Moskalev, N. V.
, p. 158 - 160 (1990)
It has been shown that carbazole and its N-alkyl substituted derivatives are readily alkylated by a mixture of t-BuOH-CF3COOH to form 1,3,6,8-tetra- and 3,6-di(tert-butyl)-substituted carbazoles, respectively.Trifluoroacetylation of these compounds leads to 1-trifluoroacetylated compounds but 1,3,6,8-tetra(tert-butyl)carbazole undergoes ipso-substitution to form the 3-trifluoroacetyl derivative.
Preparation and study of 1,8-di(pyrid-2′-yl)carbazoles
Mudadu, Maria S.,Singh, Ajay N.,Thummel, Randolph P.
, p. 6513 - 6520 (2008/12/22)
(Figure Presented) A series of three derivatives of 1,8-di(pyrid-2′- yl)carbazole were prepared by Stille-type coupling of 2-(tri-n-butylstannyl) pyridine with the appropriate 1,8-dibromocarbazole. The carbazoles were prepared by appropriate substitution methodologies on the parent carbazole or by palladium-catalyzed cyclization of di-(p-tolyl)amine to provide the carbazole ring system. An X-ray structure of the di-tert-butyl derivative confirmed that both pyridyl groups were oriented for favorable intramolecular H-bonding to the central N-H. Two orientations of the molecule were found in the unit cell and this observation was corroborated by two N-H stretching bands in the solid state IR. Substitution of N-H by N-D led to increased emission intensity through diminished intramolecular deactivation of the excited state. The di-tert-butyl derivative formed a tridentate complex with Pd(II), which showed a red-shifted band attributed to an intraligand charge transfer state.
ALKYLATION AND ALKENYLATION OF CARBAZOLE WITH ISOBUTYLENE AND PHENYLACETYLENE IN THE PRESENCE OF DIETHYLALUMINIUM CHLORIDE
Kuznetsov, V. L.,Lopatinskii, V. P.,Filimonov, V. D.
, p. 1988 - 1991 (2007/10/02)
The reaction of carbazole with isobutylene and phenylacetylene in the presence of diethylaluminium chloride leads to the formation of ring-substituted alkyl and alkenyl derivatives of carbazole.The key stage in the synthesis of the obtained compounds is the formation of the intermediate N-aluminio derivative of carbazole.
