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. 2020 Jan 21;11:403. doi: 10.1038/s41467-020-14292-2

Fig. 4. Cu-catalyzed γ-C(sp3)-H alkynylation of linear oxime esters.

Fig. 4

[a] Conditions: 2 (0.1 mmol), 3 (0.2 mmol, 2.0 equiv), (CuOTf)2·C6H6 (0.05 equiv), tBu3-TERPY (0.1 equiv), K2CO3 (2.0 equiv), DCE (2.0 mL, c 0.05 M), 45 °C, under nitrogen atmosphere. Yields refer to the isolated products. [b] Reaction performed at 1.0 mmol scale.