Lewis base-catalyzed perfluoroalkylation of carbonyl compounds and aldimines with (perfluoroalkyl)trimethylsilanes (TMSCF3, TMSC2F5, and TMSC3F7) is described. The nitrogen- or oxygen-containing an...
Nucleophilic Trifluoromethylation of <i>N</i>-Tosyl Aldimines
作者:G. K. Surya Prakash、Mihirbaran Mandal、George A. Olah
DOI:10.1055/s-2001-9724
日期:——
TMSCF3 and tetrabutylammonium (triphenylsilyl) difluorosilicate (TBAT) were used for efficient nucleophilic trifluoromethylation to N-tosyl aldimines. Aromatic, aliphatic and α,β-unsaturated sulfonaldimines were efficiently trifluoromethylated to obtain the corresponding sulfonamide adducts in good to excellent yields.
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.