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Starting haloenynes were readily prepared, generally in one to three steps from commercially available starting materials. For details, see the supporting information.
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note
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a) Pyrrole cascade: 90% conversion after 4 h, 34% pyrrole and 41% C-N coupling product;
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58
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note
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b) pyrazole cascade: 80% conversion after 4 h, 25 % cyclized product and 55 % C-N coupling product.
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note
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Additionally, a control experiment was performed in which 1-(1-propynyl)cyclohexene was subjected to the reaction conditions; no traces of intermolecular hydroamidation products were detected after 24 h, thus indicating that intermolecular hydroamidation is unlikely using our protocol.
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