Institute of Petroleum Chemistry and Catalysis, Russian Academy of Sciences, pr. Oktyabrya 141, Ufa, 450075 Bashkortostan, Russia e-mail: ink@anrb.ru ... We previously studied reactions of α-olefins with various alkyl halides in the presence of triethylalumi- num and a catalytic amount of Cp2TiCl2 or Cp2ZrCl2 and found that the system t-BuBr–Et3Al–Cp2TiCl2 en- sures successful hydroalkylation of aliphatic α-olefins with formation of the corresponding 2,3-dimethylal- ...