DOI:
10.1055/s-00000084
Synthesis
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Bäckvall and co-workers have already observed a similar influence of pendant allyl groups in a copper-catalysed reaction. N-Allyl and N-aryl secondary sulfonamides could be coupled with bromoallenes by the use of a copper catalyst giving N-allenyl-N-allylsulfonamides, but the reaction failed when saturated N-substituents were employed. Persson AK. Å, Johnston EV, Bäckvall J.-E.
Org. Lett. 2009;
11: 3814
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