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Beilstein J. Org. Chem. 2013, 9, 526–532, doi:10.3762/bjoc.9.57
Graphical Abstract
Scheme 1: Possible regioisomers obtained in the carbocupration reaction of α-heterosubstituted acetylenes 1.
Scheme 2: Regioselective carbometallation of N-alkynylsulfonamide 2.
Scheme 3: Regioselective carbometallation of ynamide 4.
Scheme 4: Regioselective carbometallation of cyclic N-alkynylcarbamate 7.
Figure 1: Molecular structure of 9f (hydrogen atoms except of H9 and H10 are omitted for clarity).