Table 2. Hydroalkylation of dienes with hydrazone 2a ^{a , b} .

^aReaction conditions: 1 (0.4 mmol), 2a (0.2 mmol), Ni(COD)₂ (0.02 mmol), P(4-CF₃C₆H₄)₃ (0.024 mmol), ^tBuOLi (0.02 mmol), EtOH (1.5 mL) at 80 °C for 8 h. Isolated yields. Regioselectivity was the ratio of 3 to 3′, which was determined by ¹H NMR analysis of the product.

^b Z/E configuration of aromatic dienes had no effect on the yield and selectivity of the reaction (see ESI).

^c 1 (0.2 mmol), 2a (0.3 mmol).

^d E-isomer of aliphatic diene as starting material, DPPPe as the ligand.