Correction to Catalytic Enantioselective Protonation of Nitronates Utilizing an Organocatalyst Chiral Only at Sulfur
作者:Kyle L. Kimmel、Jimmie D. Weaver、Melissa Lee、Jonathan A. Ellman
DOI:10.1021/ja306016b
日期:2012.7.18
Catalytic Enantioselective Protonation of Nitronates Utilizing an Organocatalyst Chiral Only at Sulfur
作者:Kyle L. Kimmel、Jimmie D. Weaver、Melissa Lee、Jonathan A. Ellman
DOI:10.1021/ja3026196
日期:2012.6.6
highly enantioselectiveprotonation of nitronates formed upon the addition of α-substituted Meldrum's acids to terminally unsubstituted nitroalkenes is described. This work represents the firstenantioselectivecatalytic addition of any type of nucleophile to this class of nitroalkenes. Moreover, for the successful implementation of this method, a new type of N-sulfinyl urea catalyst with chirality residing