Asymmetric organocatalytic mannich reaction of 1-aryl-2,2,2-trifluoroethylidenecarbamic acid derivatives with acetone
作者:N. M. Golovach、V. N. Tkachuk、V. A. Sukach、M. V. Vovk
DOI:10.1134/s1070428012090060
日期:2012.9
Mannich reactions of ethyl 1-aryl-2,2,2-trifluoroethylidenecarbamates and ureas with acetone in the presence of L-proline gave 1-aryl-3-oxo-1-(trifluoromethyl)butylcarbamates and ureas with an enantiomeric excess of 24-54%.