Abstract
| - 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 acidon the reaction was examined. Methods for the conversionof α,α-difluoroacylsilanes to α,α-difluorocarboxylic acids werealso explored.
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