Phosphine-catalyzed regioselective heteroaromatization between activated alkynes and isocyanides leading to pyrroles |
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Authors: | Shin Kamijo |
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Institution: | Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan |
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Abstract: | The organophosphine catalyzed reaction of activated alkynes with isocyanides produces the corresponding heteroaromatization products, pyrroles, regioselectively in good yields. The reaction proceeds most probably through the 1,4-addition of the nucleophilic phosphine catalyst to the alkynes, followed by a 3+2] cycloaddition between the resulting alkenyl phosphine intermediates and a carbanion derived from the isocyanides. |
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Keywords: | Organocatalyst Phosphine catalyzed reaction Heteroaromatization Activated alkyne Isocyanide Pyrrole [3+2] Cycloaddition |
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