Nucleophilic Trifluoromethylation of Imines Using the CF3I/TDAE Reagent
摘要:
The nucleophilic trifluoromethylation reagent derived from CF3I and tetrakis(dimethylamino)ethylene (TDAE) was found to be effective in addition to both N-tosyl aldimines and N-tolyl sulfinimines, the latter reaction exhibiting very good diastereoselectivity.
Lewis base-catalyzed perfluoroalkylation of carbonyl compounds and aldimines with (perfluoroalkyl)trimethylsilanes (TMSCF3, TMSC2F5, and TMSC3F7) is described. The nitrogen- or oxygen-containing an...
A catalytic trifluoromethylation of various aldimines with (trifluoromethyl)trimethylsilane in the presence of Lewis bases such as lithium acetate or benzoate proceeded smoothly to afford the corresponding trifluoromethylated adducts in good yields.