Table 3. Scope of nucleophilic carbonyl coupling partners ^{a , b} .

^a 1 (0.28 mmol, 1.4 equiv.), N₂H₄·H₂O (0.3 mmol, 1.5 equiv.), THF (0.14 mL), rt, 30 min; 2 (0.20 mmol, 1.0 equiv.), [Ru(p-cymene)Cl₂]₂ (0.003 mmol, 1.5 mol%), dmpe (0.006 mmol, 3.0 mol%), KO^tBu (0.1 mmol, 50 mol%), CsF (0.15 mmol, 75 mol%), 45 °C, 12 h, under N₂.

^bIsolated yields and the ratio of E/Z isomers were determined by crude ¹H NMR analysis.

^c60 °C, 24 h.

^d[(C₆Me₆)RuCl₂]₂ (0.003 mmol, 1.5 mol%) was used as catalyst.

^eK₂CO₃ (0.1 mmol, 50 mol%), 120 °C, 24 h.