Catalytic asymmetric arylation of aliphatic aldehydes using a B/Zn exchange reaction
作者:Andressa M.M. Carlos、Maria Eduarda Contreira、Bruna S. Martins、Maira F. Immich、Angélica V. Moro、Diogo S. Lüdtke
DOI:10.1016/j.tet.2015.01.014
日期:2015.2
the arylation of aliphaticaldehydes using the boron/zinc exchange reaction for the generation of transferable aryl groups, in the presence of chiral amino alcohol ligands. For the first time, a systematic investigation of this reaction using aliphaticaldehydes was developed and we have found that it proved to be significantly more challenging than the arylation of aromatic aldehydes. The corresponding
altered the transition state. Substrate mapping analysis strongly suggested that the CH/π interaction partly enhanced the (R)-enantiomer reactivity, the estimated energy of the CH/π interaction being −0.4 kcal mol−1. The substrate scope of the I287F/I290A double mutant was broad. This biocatalyst was useful for the dynamic kineticresolution of a variety of bulky secondary alcohols for which the wild-type