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2005
Carbazole derivatives
R 0150
N-Iodosuccinimide — An Effective Reagent for Regioselective Heterocyclization
o-Cyclohex-2'-enylanilines for the Synthesis of Hexahydrocarbazoles. —
35- 129 of
Regioselective cyclization of title o-cyclohexenylanilines (I) proceeds smoothly in the
presence of NIS to afford hexahydrocarbazoles (II) which are not very stable and, thus,
subsequently dehydrogenate to give compounds (III) or (IV). The relative configuration of the hexahydrocarbazoles cannot be clarified from NMR spectra but is proposed
from the reaction mechanism [cf. (V)]. — (MAJUMDAR*, K. C.; KUNDU, U. K.;
DAS, U.; JANA, N. K.; ROY, B.; Can. J. Chem. 83 (2005) 1, 63-67; Dep. Chem.,
Univ. Kalyani, Kalyani 741 235, India; Eng.) — Mischke
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