反应详情

Benzyl bromide, 4.77 g (0.028 mol), was added dropwise to a solution of 15.0 g (0.031 mol) of tris(dimethylamino)sulfonium 1,1,1,3,3,4,4,5,5,5-decafluoro-2-(trifluoromethyl)-2-pentanide in 50 mL of acetonitrile at 25° C. and the reaction mixture was stirred overnight and then poured into water. The aqueous mixture was extracted with ether, and the ether extracts were dried (MgSO4) and then distilled to give 7.5 g (66%) of 3,3,4,4,5,5,5-heptafluoro-2,2-bis(trifluoromethyl)pentylbenzene as a colorless liquid: b.p. 62°-63° (5 mm); 19F NMR (CDCl3) δ -62.7 ppm (t,t, 6F), -80.7 ppm (t, 3F), -106.3 ppm (m, 2F) and -123.3 ppm (2F); 1H NMR (CDCl3) δ 3.52 ppm (s, 2H) and 7.27 ppm (s, 5H). Anal. Calcd. for C13H7F13 : C, 38.07; H, 1.72; F, 60.21. Found: C, 37.82; H, 1.73; F, 60.42.

1. extractionThe aqueous mixture was extracted with ether
2. dry with materialthe ether extracts were dried (MgSO4)
3. distillationdistilled