The catalytic mannich reaction of 1, 1-difluoro-2-trialkyl (aryl) silyl-2-trimethyl-silyloxyethenes: preparation of β-amino acid derivatives
WJ Chung, M Omote, JT Welch
文献索引:Higashiya, Seiichiro; Chung, Woo Jin; Lim, Dong Sung; Ngo, Silvana C.; Kelly IV, William H.; Toscano, Paul J.; Welch, John T. Journal of Organic Chemistry, 2004 , vol. 69, # 19 p. 6323 - 6328
Catalytic Mannich reactions of 1, 1-difluoro-2-trialkyl (aryl) silyl-2-trimethylsilyloxyethenes (3) with a variety of sulfonylimines were utilized for the preparation of α, α-difluoro-β-amino acid derivatives (7). The influence of the Lewis acid on the reaction was examined. Methods for