Fig. 3. Aromatic scope for the formal anti-hydrozirconation of terminal alkynes; reaction conditions: (i) Cp₂ZrHCl (62 mg, 0.24 mmol, 1.2 eq.), CH₂Cl₂ (1.5 mL), alkyne A-1-17 (0.2 mmol, 1.0 eq.) in CH₂Cl₂ (0.5 mL), 15 min; (ii) irradiation (λ = 400 nm), 45 min; (iii) NBS (39 mg, 0.22 mmol, 1.1 eq.), 15 min; ^aisolated yield of Z : E-mixture as average of two reactions; ^b(i) Cp₂ZrHCl (62 mg, 0.24 mmol, 1.2 eq.), CH₂Cl₂ (1.5 mL), alkyne A-15 (26 mg, 0.2 mmol, 1.0 eq.) in CH₂Cl₂ (0.5 mL); (ii) irradiation (λ = 400 nm), 45 min; (iii) PdPPh₃ (7 mg, 0.006 mmol, 0.03 eq.) in THF (0.4 mL), BnBr (24 μL, 0.2 mmol, 1.0 eq.), rt, 18 h.¹².