... The Journal of Organic ... 4, 1b, 5b, Ph, 3k, 86. a The catalyst (5−10 mol %) was prepared in situ from NiCl 2 (dppf) and 2 equiv of MeLi before use (0 °C, 15−60 min), and the reactions were carried out at 50−60 °C overnight. b R 1 = Ph for 3h−j; R 1 = COOEt for 3k. R 2 = n-C 5 H 11 . ...