ChemInform Abstract: DIALKYL TRIFLUOROMETHYL PHOSPHONATES

Abstract

Diethyl‐trifluormethyl‐phosphonit (I) wird zum Chlorphosphonat (II) chloriert, das mit Alkoholen (III) direkt die Trifluormethyl‐phosphonate (IV) bildet.

A new method for the synthesis of trifluoromethylating agents—Diaryltrifluoromethylsulfonium salts

“…Bp = 55-57 8C (7 Torr) [19]. 19 3.11. 4-Nitrophenyl(fluoro)trifluoromethylsulfonium tetrafluoroborate (13) XeF 2 (0.14 g, 0.83 mmol) and BF 3 ÁEt 2 O (0.1 g, 0.71 mmol) were added to a stirred solution of 4-nitrophenyltrifluoromethylsulfide (0.15 g, 0.67 mmol) in dichloromethane (5 mL) at À60 8C.…”

“…1 H NMR (CDCl 3 ): d 1.38 (t, 3H); 3.8 (q, 2H). 19 Ndimethylamino)phenyl](trifluoromethylthio)carbenium triflate (10)…”