Nickel-catalyzed conjugate addition of alkenylzirconium species to. alpha.,. beta.-unsaturated ketones

J Schwartz, MJ Loots, H Kosugi

Index: Schwartz,H.; Loots,M.J.; Kosugi,H. Journal of the American Chemical Society, 1980 , vol. 102, p. 1333

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Citation Number: 101

Abstract

Abstract: Alkenylzirconium (IV) complexes, prepared by hydrozirconation of the corresponding acetylenes with CpzZr (H) CI (Cp= q5-C5H5), can be utilized in conjugate addition to oc, b-rnones, catalyzed by Ni (AcAc) z (AcAc= 2, 4-pentanedionate). No 1.2 addition of the alkenyl group is observed, and no trans-cis isomerization occurs. Conjugate addition of terminal alke-nyls proceeds faster than that of internal alkenyls. The product of ...