Aminative Umpolung of Aldehydes to α-Amino Anion Equivalents for Pd-Catalyzed Allylation: An Efficient Synthesis of Homoallylic Amines
作者:Lei Ding、Jing Chen、Yifan Hu、Juan Xu、Xing Gong、Dongfang Xu、Baoguo Zhao、Hexing Li
DOI:10.1021/ol4034012
日期:2014.2.7
An attractive strategy for generation of α-aminoanionsfrom aldehydes with applications in synthesis of homoallylic amines is described. Aromatic aldehydes can be converted to α-aminoanionequivalents via amination with 2,2-diphenylglycine and subsequent decarboxylation. The in situ generated α-imino anions are highly reactive for Pd-catalyzed allylation, forming the corresponding homoallylic amines
The Enantioselective Intermolecular Saegusa Allylation
作者:Ji Liu、Edward M. Laguna、Arun Raj Kizhakkayil Mangadan、Kyoungmin Kang、Aaron Aponick
DOI:10.1021/acscatal.1c04546
日期:2021.12.17
A simple procedure for the intermolecular enantioselective palladium-catalyzeddecarboxylativeallylation of β-ketoacids is described. This method, inspired by a stoichiometric control experiment performed by Saegusa and co-workers some 40+ years ago, makes use of allyl carbonates as the coupling substrates and enables direct access to α-allylated ketones bearing newly formed quaternary stereocenters