Indium(I)-Catalyzed Asymmetric Allylation, Crotylation, and α-Chloroallylation of Hydrazones with Rare Constitutional and High Configurational Selectivities
The hydra‐zone: The first example of asymmetric InI catalysis had been developed. InI combined with a chiral semicorrin ligand (L*) is an effective catalyst for enantioselective allylation, crotylation, and α‐chloroallylation of hydrazones. In the two latter cases, CC bond formations proceeded with highselectivity where both reactive aliphatic CCl and aromatic OH bonds were tolerated.
The sulfinyl moiety in Lewis base-promoted allylations
作者:J. Robin Fulton、Lamin M. Kamara、Simon C. Morton、Gareth J. Rowlands
DOI:10.1016/j.tet.2009.09.042
日期:2009.11
By employing Senanayake's oxathiazolidine-2-oxide reagent, a collection of sulfinamides was prepared and provided the first examples of sulfinamides promoting the allylation of benzaldehyde and N-benzoylhydrazones with allyltrichlorosilane. The optimum sulfinamide-derived Lewis base promoter displays comparable activity to the best sulfinyl-based Lewis bases reported. The use of bis-sulfoxides is also discussed. (C) 2009 Elsevier Ltd. All rights reserved.
Indium-Mediated Catalytic Enantioselective Allylation of <i>N</i>-Benzoylhydrazones Using a Protonated Chiral Amine
作者:Sung Jun Kim、Doo Ok Jang
DOI:10.1021/ja1035336
日期:2010.9.8
A catalytic enantioselective indium-mediatedallylation of N-benzoylhydrazones in conjunction with a protonated chiral amine affording enantioenriched homoallylic amines with an extremely high level of enantioselectivity and chemical yield was developed.