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Conjugate addition of indole on nitro‐olefins was carried out by three different methods: (i) thermal heating in a sealed tube, (ii) reaction with indolyl magnesium iodide, and (iii) microwave irradiation. Comparison of the results indicated that the microwave technique is most efficient.
We are grateful to A. P. Gadgil for IR spectra, J. P. Chaudhari for NMR spectra, and V. S. Shinde and D. S. Shishupal for mass spectra.
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