Highly Selective Addition of a Broad Spectrum of Trimethylsilane Pro-nucleophiles to <i>N</i>
-<i>tert</i>
-Butanesulfinyl Imines
作者:Manas Das、Donal F. O'Shea
DOI:10.1002/chem.201503354
日期:2015.12.14
Addition of organotrimethylsilane reagents to chiral N‐tert‐butanesulfinyl imines can be achieved in good yields and with excellent diastereoselectivities by employing TMSO−/Bu4N+ as a Lewis base activator in THF. A variety of aliphatic, aromatic, heteroaromatic and organometallic chiral imines were utilised as electrophiles for the synthesis of enantioenriched N‐tert‐butanesulfinyl amides. Remarkably
SmI2-promoted imino-Reformatsky reaction for facile synthesis of enantioenriched β-amino acid esters
作者:Li Wang、Chun Shen、Ming-Hua Xu
DOI:10.1007/s11426-010-4180-z
日期:2011.1
A facile and efficient method for the stereoselective synthesis of β-amino acid esters via SmI2-promoted imino-Reformatsky reaction is described. Asymmetric addition of tert-butyl bromoacetate to N-tert-butanesulfinyl aldimines afforded β-amino acid esters in moderate to high yields with excellent diastereoselectivities. The syntheticutilities of the tert-butyl β-amino acid esters were expanded by