Table 3. Substrate scope with different aminesa.
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All yields are isolated yields.
4% of ortho-C–H vinylation product and 3% of sequential C–H/C–C activation product were observed.
6% of ortho-C–H vinylation product was observed.
2.0 equiv of alkyne 2a was used.
The reaction conversion was 83%, determined by crude 1H NMR.