An earth-abundant transition-metal copper catalyzed asymmetrichydrogenation of exocyclic α,β-unsaturated pentanones affording the corresponding chiral exocyclic allylic pentanols in up to 99 % yield and 96 % ee (enantiomeric excess) is reported. Mechanistic studies indicate that only the C=O bond is chemoselectively reduced and the reaction is promoted via the multiple attractive dispersion interactions
据报道,地球丰富的过渡金属铜催化环外 α,β-不饱和戊酮的不对称氢化,得到相应的手性环外烯丙基戊醇,收率高达 99%,ee(对映体过量)为 96%。机理研究表明,只有 C=O 键被化学选择性还原,并且通过 Cu 催化剂和底物之间的多重吸引分散相互作用促进反应。