Asymmetric Synthesis of Amines by the Knochel-Type MgCl<sub>2</sub>-Enhanced Addition of Benzyl Zinc Reagents to <i>N</i>-<i>tert</i>-Butanesulfinyl Aldimines
作者:Andrew W. Buesking、Tyler D. Baguley、Jonathan A. Ellman
DOI:10.1021/ol103002t
日期:2011.3.4
The MgCl2-enhanced addition of benzyl zinc reagents to N-tert-butanesulfinyl imines proceeds readily at room temperature to afford the N-tert-butanesulfinyl-protected amine products in good yields and diastereomeric ratios. This method is functional group tolerant in both the imine substrate and benzyl zinc coupling partner. Moreover, benzyl zinc reagentaddition to the N-tert-butanesulfinyl imine
2,2- and 2,6-Diarylpiperidines by Aryl Migration within Lithiated Urea Derivatives of Tetrahydropyridines
作者:Michael B. Tait、Sam Butterworth、Jonathan Clayden
DOI:10.1021/acs.orglett.5b00199
日期:2015.3.6
or carbolithiation led to migration of the N′-aryl substituent to the 2- or 6-position via intramolecular nucleophilic attack of a benzylic organolithium on the aryl ring. The products are a range of 2,2-, 2,2,3-, and 2,6-polysubstituted piperidine derivatives. Related chemistry was observed in pyrroline homologues.
the highly diastereoselective synthesis of chiral homoallylic amines by Zn-mediated allylation of chiral N-tert-butanesulfinyl imines at room temperature was developed. By simply tuning the reaction conditions, the method allows the achievement of a highly remarkable opposite stereocontrol, affording the desired stereochemical outcome in good yield and with excellent diastereoselectivity (up to 98%
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.
Modulators of cystic fibrosis transmembrane conductance regulator
申请人:Hadida-Ruah Sarah
公开号:US20080161371A1
公开(公告)日:2008-07-03
The present invention relates to modulators of cystic fibrosis Transmembrane Conductance Regulator (“CFTR”), compositions thereof, and methods therewith. The present invention also relates to methods of treating CFTR mediated diseases using such modulators.