Stereoselective Nucleophilic Monofluoromethylation of N-(tert-Butanesulfinyl)imines with Fluoromethyl Phenyl Sulfone
摘要:
Highly stereoselective nucleophilic monofluoromethylation of (R)-(tert-butanesulfinyl)imines with fluoromethyl phenyl sulfone was achieved to afford alpha-monofluoromethylamines with a nonchelation-controlled stereoselectivity mode. By using the same chemistry, (R)-(tert-butanesulfinyl)imines bearing a terminal tosylate (M) group can be converted to alpha-monofluoromethylated cyclic secondary amines with high stereoselectivity.
The Preparation and Utility of Bis(sulfinyl)imidoamidine Ligands for the Copper-Catalyzed Diels−Alder Reaction
作者:Timothy D. Owens、Andrew J. Souers、Jonathan A. Ellman
DOI:10.1021/jo020524c
日期:2003.1.1
The design and preparation of a novel class of ligands based on the sulfinyl imine functionality is described. In particular, an efficient and modular synthesis of bis(sulfinyl)imidoamidine (siam) ligands is reported. The versatility of the synthetic sequence is demonstrated by the preparation of various analogues to explore the effect of substitution about the ligand framework on catalytic activity
Telluronium Salts Mediated Aziridination of Chiral <i>N</i>-<i>tert</i>-Butylsulfinylimines: Highly Stereoselective Synthesis of Optically Active Vinylaziridines
作者:Jun-Cheng Zheng、Wei-Wei Liao、Xiao-Xia Sun、Xiu-Li Sun、Yong Tang、Li-Xin Dai、Jin-Geng Deng
DOI:10.1021/ol051921n
日期:2005.12.1
[reaction: see text] Optically active cis-2-substituted vinylaziridines are synthesized by the reaction of N-tert-butylsulfinylimines with telluroniumylides with excellent diastereoselectivity in good to excellent yields.
Corey-Chaykovsky Reaction of Chiral Sulfinyl Imines: A Convenient Procedure for the Formation of Chiral Aziridines
作者:Robert A. Stockman、Daniel Morton、David Pearson、Robert A. Field
DOI:10.1055/s-2003-42028
日期:——
The reaction of dimethylsulfonium methylide with a range of aromatic, heterocyclic and aliphatic tert-butylsulfinyl imines is presented. Aziridines were formed in 63-84% yield and 77-95% diastereomeric excess.
Diastereoselective Cyanomethylation of Chiral<i>N</i>-(<i>tert</i>-Butylsulfinyl)imines Promoted by Lewis Bases
作者:Teruaki Mukaiyama、Makoto Michida
DOI:10.1246/cl.2007.1244
日期:2007.10.5
Cyanomethylation of chiral N-(tert-butylsulfinyl)imines with 2-trimethylsilylacetonitrile (TMSCH2CN) in the presence of a Lewis base such as tetrabutylammonium phenoxide (PhONn-Bu4) proceeds smoothly to afford the corresponding β-amino nitriles in good to high yields with excellent diastereoselectivities.
[EN] AN IMPROVED PROCESS FOR DIASTER-EOSELECTIVE SYNTHESIS OF VICINAL DIAMINES<br/>[FR] PROCÉDÉ PERFECTIONNÉ POUR LA SYNTHÈSE DIASTÉRÉOSÉLECTIVE DE DIAMINES VICINALES
申请人:PIRAMAL ENTPR LTD
公开号:WO2020012403A1
公开(公告)日:2020-01-16
The present invention relates to an improved process for diastereoselective synthesis of vicinal diamines (1). The process involves highly regio- and diastereoselective addition of 2-azaallyl anions (4) to N-tert-butanesulfinylimines (5) to produce vicinal diamines (1).