S. Si-yuan
2010
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Journal
Journal of tianjin University of Technology
Abstract
3,6-Dibromo-9-ethyl-9H-carbazole 3 was prepared from carbazole via alkylation reaction with EtBr and bromonation reaction with NBS.Treatment of 3 with thiophen-2-ylboronic acid through Suzuki coupling reaction and with POCl3/DMF through Vilsmeier-Haack reaction gave dialdehyde 5,which is an important intermediate for preparation of organic dyes in dye-sensitized solar cells.The compound 5 is characterized by IR and NMR spectra.