中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
2-苯基乙基3,3,3-三氟-2-甲基丙酸酯 | 2-phenylethyl 3,3,3-trifluoro-2-methylpropionate | 371777-98-9 | C12H13F3O2 | 246.229 |
—— | 2-phenethyl 3,3-difluoro-2-methylacrylate | 507266-28-6 | C12H12F2O2 | 226.223 |
—— | 2-phenethyl 3,3-difluoro-2-methylpropionate | 252061-08-8 | C12H14F2O2 | 228.239 |
The slow inverse addition of an LDA solution at -78 °C to an ester of 2-(trifluoromethyl)acrylic acid enabled efficient dehydrofluorination. Hydrogenation of the resulting difluoromethylacrylate furnished the target ester of 3,3-difluoro-2-methylpropionic acid in good overall yield.