Asymmetric Synthesis of New Chiral β-Amino Acid Derivatives by Mannich-type Reactions of Chiral <i>N</i>-Sulfinyl Imidates with <i>N</i>-Tosyl Aldimines
作者:Filip Colpaert、Sven Mangelinckx、Norbert De Kimpe
DOI:10.1021/ol100073y
日期:2010.5.7
New chiral β-(sulfonylamino)sulfinylimidates are synthesized in high overall yield and excellent diastereomeric excess via highly anti-selective Mannich-type reactions of chiral N-tert-butanesulfinyl imidates with N-tosyl aldimines. Deprotection of the β-(sulfonylamino)sulfinylimidates gave access to enantiopure imidate hydrochlorides in high yields, as useful intermediates for an easy transformation