Precatalyst‐Enabled Selectivity: Enantioselective NiH‐Catalyzed
<i>anti</i>
‐Hydrometalative Cyclization of Alkynones to
<i>Endo</i>
‐ and Heterocyclic Allylic Alcohols
作者:Xiao‐Wen Zhang、Ming‐Hui Zhu、Hai‐Xiang Zeng、Qi‐Yang Li、Wen‐Bo Liu
DOI:10.1002/anie.202110815
日期:2021.12.20
AbstractA highly enantioselective NiH‐catalyzed hydrocyclization of alkynones with unparalleled anti‐ and endocyclic selectivities is described. The choice of the precatalysts has significant influence in tuning the regio‐ and enantioselectivity. Using Ni(OTs)2/Phox as a precatalyst and (EtO)2MeSiH as a hydride source, an array of enantioenriched O‐, N‐, and S‐containing heterocyclic tertiary allylic alcohols are obtained in 24–81 % yields with 80:20–99:1 er. Mechanistic investigations and synthetic application are also carried out. This study represents an efficient access to a set of allylic alcohols that are unable to access by the state‐of‐the‐art coupling reactions.
Beeman, David; Wenger, Charles; Perlmutter, Howard D., Synthetic Communications, 1983, vol. 13, # 10, p. 853 - 862
作者:Beeman, David、Wenger, Charles、Perlmutter, Howard D.
DOI:——
日期:——
BEEMAN, D.;WENGER, CH.;PERLMUTTER, H. D., SYNTH. COMMUN., 1983, 13, N 10, 853-861