Asymmetric cinnamylation of N-tert-butanesulfinyl imines with cinnamyl acetates: total syntheses of (+)-lycoricidine and (+)-7-deoxypancratistatin
作者:Sen-Lin Cai、Bin-Hua Yuan、Yi-Xiang Jiang、Guo-Qiang Lin、Xing-Wen Sun
DOI:10.1039/c7cc00108h
日期:——
A highly diastereoselective palladium catalyzed cinnamylation of N-tert-butanesulfinyl imines with cinnamyl acetates has been established to provide enantioenriched [small beta]-aryl homoallylic amines. The synthetic application of this stragety has been successfully...
Dramatic lithium chloride effect on the reaction stereocontrol in Zn-mediated asymmetric cinnamylation: highly practical synthesis of β-aryl homoallylic amines
作者:Min Liu、An Shen、Xing-Wen Sun、Fei Deng、Ming-Hua Xu、Guo-Qiang Lin
DOI:10.1039/c0cc03230a
日期:——
An extremely mild and practical approach for the preparation of enantiomerically enriched beta-aryl substituted homoallylic amines bearing two adjacent stereogeniccenters was realized by room temperature zinc-mediated highlystereoselective cinnamylation of N-sulfinyl imines.
Steric Tuning of Sulfinamide/Sulfoxides as Chiral Ligands with <i>C</i><sub>1</sub>, Pseudo-<i>meso</i>, and Pseudo-<i>C</i><sub>2</sub> Symmetries: Application in Rhodium(I)-Mediated Arylation
作者:Lorenzo G. Borrego、Rocío Recio、Eleuterio Álvarez、Antonio Sánchez-Coronilla、Noureddine Khiar、Inmaculada Fernández
DOI:10.1021/acs.orglett.9b02405
日期:2019.8.16
sulfinamide/sulfoxide derivatives was synthesized as chiral bidentate ligands by stereoselective additions of methylsulfinyl carbanions to N-tert-butylsulfinylimines. The new ligands, with C1, pseudo-meso, and pseudo-C2 symmetries, were successfully assayed in Rh-catalyzedadditions of arylboronicacids to activated ketones. The sterically dissymmetric C1 ligand (RS,SC,RS)-N-[1-(phenylsulfinyl)-3-methylbut-2-yl] t
Rhodium-Catalyzed Asymmetric Arylation of <i>N</i>-(<i>tert</i>-Butanesulfinyl)imines with Sodium Tetraarylborates
作者:Leleti Rajender Reddy、Aditya P. Gupta、Eric Villhauer、Yugang Liu
DOI:10.1021/jo2024224
日期:2012.1.20
A diastereoselective rhodium-catalyzed arylation of N-(tert-butanesulfinyl)imines with sodium tetraarylborates is described. This method is general for constructing various chiral α-branchedamines and 2-substituted pyrrolidines with high diastereoselectivity. A practical asymmetric approach to access chiral amines has been developed involving the use of air-stable Rh catalysts and reagents and in
Asymmetric addition of benzothiazole to N-tert-butanesulfinyl imine for the synthesis of chiral α-branched heteroaryl amines
作者:Jinlong Zhang、Yuhong Yang、Mei Wang、Li Lin、Rui Wang
DOI:10.1016/j.tetlet.2012.09.131
日期:2012.12
This work concerns the asymmetric additions of benzothiazole to a variety of N-tert-butanesulfinyl imines with excellent diastereoselectivities (d.r. up to >99:1). Amino alkoxyl lithium was the key additive to obtain the excellent diastereoselectivity. More functionalized 4-methyl-5-vinyl thiazole and alkyl imines which can isomerize to enamines are also compatible substrates to the present protocol