反应详情

To a mixture of isopropylamine (5.65 g) and dimethylformamide (DMF, 5 mL) was added HFIB in several portions over a period of about 0.5 h until a gentle reflux of HFIB was observed which did not dissipate. A dry-ice condenser was used to obtain the gentle reflux of HFIB at 25° C. for 15 h. The reaction mixture was poured into water (100 mL) and the bottom layer separated, washed with water (10 mL) and dried over sodium sulfate to provide N-isopropyl N-(2-trifluoromethyl-3,3,3-trifluoropropyl)amine (15 g): MS (m/e) 223 (M+, 1.2%), 208 (100%), 72 (7.8%); 1H NMR (CDCl3) 1.06 (d, J=6 Hz, 6H), 1.12 (m, 1H), 2.81 (m, 1H), 3.07 (m, 3H) ppm; 19F NMR −67.0 (d, J=9 Hz) ppm.

1. customA dry-ice condenser was used
2. customto obtain the
3. customthe bottom layer separated
4. washwashed with water (10 mL)
5. dry with materialdried over sodium sulfate