Table 2.
Ketene Surrogate Coupling Scope
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Isolated yields over 2 steps. Reactions were conducted on a 0.3 mmol scale unless otherwise noted, 0.25 M in 1:1 (v:v) amine:ynol ether with 5 mol% Pd2(dba)3, 20 mol% phosphine, and 13 mol% of CuI for 12–24 h at rt.
3 mmol scale.
1 mmol scale.
48 h reaction time.