Catalytic Enantio- and Diastereoselective Alkylations with Cyclic Sulfamidates
作者:Thomas A. Moss、Beatriz Alonso、David R. Fenwick、Darren J. Dixon
DOI:10.1002/anie.200905329
日期:2010.1.12
Open for business: The enantio‐ and diastereoselective nucleophilic ring opening of five‐membered and six‐membered cyclicsulfamidates under asymmetric phase‐transfer catalysis is presented. A range of pro‐nucleophiles have been successfully alkylated in good yields and in good to excellent enantioselectivites.
Enantio- and Diastereoselective Catalytic Alkylation Reactions with Aziridines
作者:Thomas A. Moss、David R. Fenwick、Darren J. Dixon
DOI:10.1021/ja8036965
日期:2008.8.1
The first asymmetric phase transfer catalyzed alkylation reaction of a range of carbon acids with N-sulfonyl aziridines is reported. When 10 mol % of a cinchona derived quaternary ammonium salt was employed as the catalyst under mildly basic conditions, N-o-(trifluoromethane)benzenesulfonyl aziridine was efficiently ring-opened to afford the amino ethylene products in consistently high yields and high