Aza-Henry Reaction with CF<sub>3</sub>-Ketimines: An Efficient Approach to Trifluoromethylated β-Nitroamines, 1,2-Diamines, α-Aminooximes, and Imidazolidinones
作者:Irina V. Kutovaya、Olga I. Shmatova、Viktor M. Tkachuk、Nina V. Melnichenko、Mikhail V. Vovk、Valentine G. Nenajdenko
DOI:10.1002/ejoc.201500898
日期:2015.10
and trifluoroacetophenones were studied in aza-Henryreactions with nitroalkanes. We found that nitromethane and nitropropane react with CF3-substituted ketimines to form the target β-nitroamines in high yield. The aza-Henryreaction proceeded under mild conditions in the presence of an appropriate base. A new simple method for the synthesis of β-nitroamines bearing CF3 group was developed. α-CF3-β-nitroamines
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%.