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Acetylation of 9‐alkylcarbazoles with acetic anhydride catalyzed by PPh3 · HClO4 was reported to give acetylcarbazoles. Carbazole aldehydes were easily synthesized by the Vilsmeier reaction of 9‐alkylcarbazoles under microwave condition in good yields.
We thank the Council of Scientific and Industrial Research, New Delhi, India for financial support.
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