Efficient
Synthesis of Arylated Carbazole from Cyclopentadienyliron
Complexes
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Abstract
Arylated carbazoles
are valuable intermediates in the preparation
of organic functional materials. The present work addresses an improved
process for the preparation of arylated carbazoles. This process involves
a nucleophilic substitution between the cyclopentadienyliron complexes
of chloroarenes and carbazole or hydroxyl carbazole, followed by photolysis
of cyclopentadienyliron complexes of arylated carbazoles (Fc-carbazole).
The described process combines two steps in good yields and is cost-effective,
and thus, it is a practical route of preparation of arylated carbazoles.
The purification strategy of arylated carbazoles was subjected to
crystallization instead of column chromatography, which is very good
for their industrial applications. The arylated carbazoles products
were determined by Fourier transform infrared (FT-IR), liquid chromatography
mass spectroscopy (LC-MS), and NMR
