(Bis(2-methoxyethyl)amino)sulfur trifluoride → HCID 86690089, compound
Reaction equation
COCCN(S(F)(F)[F:11])CCOC.[F:14][C:15]1([F:28])[CH2:20][CH2:19][C:18]([CH2:26]O)([C:21]([O:23][CH2:24][CH3:25])=[O:22])[CH2:17][CH2:16]1>>[F:14][C:15]1([F:28])[CH2:20][CH2:19][C:18]([CH2:26][F:11])([C:21]([O:23][CH2:24][CH3:25])=[O:22])[CH2:17][CH2:16]1Participants
3
Conditions
- Temperature
- 70 °C
Procedure
A neat stirred mixture of Deoxo-Fluor® (196 mg, 0.887 mmol) and ethyl 4,4-difluoro-1-(hydroxymethyl)cyclohexanecarboxylate (98.6 mg, 0.444 mmol) was heated at 70° C. overnight. The reaction was cooled to rt and quenched with ice and extracted with DCM, washed with satd. NaHCO3, water, brine and dried (MgSO4). Evaporation of DCM gave a light brown oil which was purified by silica gel FCC (1:3 hexanes:DCM) to afford ethyl 4,4-difluoro-1-(fluoromethyl)cyclohexanecarboxylate as a clear oil. 1H NMR (400 MHz, CHLOROFORM-d) δ 4.42 (d, J=47.2 Hz, 2H), 4.25 (q, J=7.0 Hz, 2H), 2.33-2.19 (m, 2H), 2.15-2.01 (m, 2H), 2.01-1.81 (m, 2H), 1.69-1.56 (m, 2H), 1.31 (t, J=7.0 Hz, 3H).