Methanol → (R)-1-(3-fluoro-5-(1,1,2,2-tetrafluoroethoxy)phenyl)-1-(4-fluorophenyl)-2-phenylethanamine

HRID 238728Notes

Reaction equation

HRID 238728 reaction equation
[F:1][C:2]1[CH:3]=[C:4]([C@:15]([NH:30][S@@](C(C)(C)C)=O)([C:23]2[CH:28]=[CH:27][C:26]([F:29])=[CH:25][CH:24]=2)[CH2:16][C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)[CH:5]=[C:6]([O:8][C:9]([F:14])([F:13])[CH:10]([F:12])[F:11])[CH:7]=1.CO>Cl.O1CCOCC1>[F:1][C:2]1[CH:3]=[C:4]([C@@:15]([C:23]2[CH:28]=[CH:27][C:26]([F:29])=[CH:25][CH:24]=2)([NH2:30])[CH2:16][C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)[CH:5]=[C:6]([O:8][C:9]([F:14])([F:13])[CH:10]([F:12])[F:11])[CH:7]=1

Participants

5

Reactant 2

HCID 887MethanolHCID 59458565(R)-N-((R)-1-(3-fluoro-5-(1,1,2,2-tetrafluoroethoxy)phenyl)-1-(4-fluorophenyl)-2-phenylethyl)-2-methylpropane-2-sulfinamide

Product 1

HCID 59458485(R)-1-(3-fluoro-5-(1,1,2,2-tetrafluoroethoxy)phenyl)-1-(4-fluorophenyl)-2-phenylethanamineYield 90%

Reagents, catalysts & solvents 2

HCID 313Hydrochloric AcidSolventHCID 312751,4-DioxaneSolvent

Procedure

(R)—N—((R)-1-(3-fluoro-5-(1,1,2,2-tetrafluoroethoxy)phenyl)-1-(4-fluorophenyl)-2-phenylethyl)-2-methylpropane-2-sulfinamide (234 mg, 0.442 mmol) was stirred in 4N HCl in dioxane (1.5 mL) and MeOH (1.5 mL) at room temperature under Ar for 10 min. The reaction mixture was concentrated, and then purified by flash chromatography (silica gel, hexanes/EtOAc) to give (R)-1-(3-fluoro-5-(1,1,2,2-tetrafluoroethoxy)phenyl)-1-(4-fluorophenyl)-2-phenylethanamine (169 mg, 90%). LC-MS (ESI) 409.16 (M-NH3+H), retention time=3.26 minutes (0-100% MeOH in H2O with 0.1% TFA in 4-min run); Analytical HPLC: 2.52 minutes (0-100% CH3CN in H2O with 0.1% TFA in 4-min run); 1H NMR (400 MHz, CD3OD) δ ppm 7.29-7.50 (m, 2H), 6.87-7.22 (m, 8H), 6.77 (d, J=6.15 Hz, 2H), 6.04-6.48 (m, 1H), 3.57 (s, 2H).

Workup

  1. concentrationThe reaction mixture was concentrated
  2. custompurified by flash chromatography (silica gel, hexanes/EtOAc)

Sources & evidence

ORD record
ord-44ec58c68bee4772b0ae673378e05154
Source dataset
uspto-grants-2014_02
Patent number
US08642576B2

Reaction notes

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