Hydrometalation. 5. Hydroalumination of Alkenes and Alkynes with Complex Metal Hydrides of Aluminium in the Presence of Cp2TiCl2

Article abstract of DOI:10.1021/jo01294a023

Terminal alkenes and internal alkynes are reduced rapidly and in high yield by reaction with LiAlH4, NaAlH4, LiAlMe3H, NaAlMe3H, LiAlH2(NR2)2, NaAlH2(NR2)2, or Vitride in the presence of catalytic amount of Cp2TiCl2 in THF at room temperature.When these reactions were quenched with D2O or I2, quantitative yields of the corresponding deuterium or iodine compounds were obtained in most cases.This method provides a convenient and high-yield route to alkyl- and vinylaluminium compounds as intermediates in organic synthesis.