反应 #78742

反应方程式

N-(3-bromophenyl)-N-[2-[[(1,1-dimethylethyl) dimethylsilyl]oxy]-3,3,3-trifluoropropyl]-3-(1,1,2,2-tetrafluoroethoxy) benzenemethanamine

cesium carbonate

4-methoxyaniline

Tetrabutylammonium fluoride

→

3-[[3-[(4-methoxyphenyl)amino]phenyl]-[[3-(1,1,2,2-tetrafluoroethoxy)phenyl]methyl]amino]-1,1,1-trifluoro-2-propanol

收率 74.2%

溶剂

toluene

反应条件

后处理

1. 1
   过滤The reaction mixture was filtered through celite
2. 2
   其他the solvent was evaporated
3. 3
   其他The residue was purified by silica gel chromatography
4. 4
   洗涤eluting with 20% ethyl acetate in hexane

实验过程

A mixture containing N-(3-bromophenyl)-N-[2-[[(1,1-dimethylethyl) dimethylsilyl]oxy]-3,3,3-trifluoropropyl]-3-(1,1,2,2-tetrafluoroethoxy) benzenemethanamine (75 mg, 0.124 mmol), cesium carbonate (57.5 mg, 0.176 mmol), 4-methoxyaniline (18.6 mg, 0.151 mmol) tris(dibenzylideneacetone) dipalladium (0) (4.6 mg, 0.005 mmol), R-(+)-2,2′-bis(diphenylphosphino)-1,1′-binaphthyl (4.7 mg, 0.0075 mmol) and toluene (2.5 mL) was heated to 95° C. in a sealed vial for 48 h. Tetrabutylammonium fluoride (1 M, THF, 0.372 mL, 0.372 mmol) was added, and the reaction was stirred at 23° C. for 1.5 h. The reaction mixture was filtered through celite, and the solvent was evaporated. The residue was purified by silica gel chromatography eluting with 20% ethyl acetate in hexane to give 49 mg (73%) of the desired 3-[[3-[(4-methoxyphenyl)amino]phenyl]-[[3-(1,1,2,2-tetrafluoroethoxy)phenyl]methyl]amino]-1,1,1-trifluoro-2-propanol product as an orange oil. HRMS calcd for C25H23F7N2O3:532.1597, found: 532.1592 [M]+. 1H NMR (CDCl3) δ 3.48-3.57 (m, 1H), 3.77 (s, 3H), 3.83 (dd, 1H), 4.33 (m, 1H), 4.59 (s, 2H), 5.87 (tt, 1H), 6.27 (m, 1H), 6.33 (bd, 1H), 6.86 (dd, 4H), 7.02-7.12 (m, 4H), 7.31 (t, 1H), 7.41 (m, 1H), 7.60 (m, 1H). 19F NMR (CDCl3) δ −137.201 (d, 2F), −88.515 (s, 2F), −79.120 (s, 3F).

来源