Cobalt‐Catalyzed Asymmetric 1,4‐Reduction of
<i>β,β‐</i>
Dialkyl
<i>α</i>
,
<i>β</i>
‐Unsaturated Esters with PMHS
作者:Dongpo Lu、Peng Lu、Zhan Lu
DOI:10.1002/ejoc.202100856
日期:2021.9.14
A cobalt-catalyzed asymmetric reduction of β,β-dialkyl α,β-unsaturatedesters with polymethylhydrosiloxane (PMHS) was reported to deliver the corresponding esters containing a chiral trialkyl carbon center at β-position with up to 97 % yield and 98 % ee. The chiral tridentate ligand oxazoline iminopyridine (OIP) could perform well for the asymmetric reduction instead of chiral bidentate ligands. This