Chemoselective Hydroalumination of 1-Aza-but-1-en-3-ynes (<i>C</i>-Iminoalkynes): Formation of Propargylamines by Imine Reduction and of 5-Aluminazoles and 1-Aza-butadienes by Anti-Michael Attack
triple bond. Aqueous workup of those species led to 1-azabutadiene derivatives 6. High-level DFT calculations indicate that the observed chemoselectivity is only compatible with a dimeric nature of the hydroaluminating agent. Using such a dimer, the iminereduction corresponds to the kinetically controlled pathway, whereas the triple bondreduction leads to the thermodynamically much more stable 5-aluminazoles
A base‐and‐additive‐free photo‐induced radical‐mediated cascade cyclization reaction of 1,6‐enyne compounds was presented. In this study, C(sp3)‐H hydrocarbons, including various alkanes and ethers, were activated via Fe‐catalyzed photo‐induced conditions, providing a bunch of γ‐lactam products via hydrogen atom transfer and radical addition processes. Control experiments indicated that the reaction