Acetic Acid → 3-[[3-[(2-Methylpropyl)amino]phenyl][[3-(1,1,2,2-tetrafluoroethoxy)phenyl]methyl]amino]-1,1,1-trifluoro-2-propanol

HRID 1018196Notes

Reaction equation

HRID 1018196 reaction equation
[NH2:1][C:2]1[CH:3]=[C:4]([N:8]([CH2:16][C:17]2[CH:22]=[CH:21][CH:20]=[C:19]([O:23][C:24]([F:29])([F:28])[CH:25]([F:27])[F:26])[CH:18]=2)[CH2:9][CH:10]([OH:15])[C:11]([F:14])([F:13])[F:12])[CH:5]=[CH:6][CH:7]=1.C(O)(=O)C.[CH:34](=O)[CH:35]([CH3:37])[CH3:36].[BH-](OC(C)=O)(OC(C)=O)OC(C)=O.[Na+]>ClC(Cl)C>[CH3:34][CH:35]([CH3:37])[CH2:36][NH:1][C:2]1[CH:3]=[C:4]([N:8]([CH2:16][C:17]2[CH:22]=[CH:21][CH:20]=[C:19]([O:23][C:24]([F:28])([F:29])[CH:25]([F:26])[F:27])[CH:18]=2)[CH2:9][CH:10]([OH:15])[C:11]([F:14])([F:13])[F:12])[CH:5]=[CH:6][CH:7]=1

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 6561IsobutyraldehydeHCID 5049666Sodium triacetoxyborohydrideHCID 235060463-[(3-Aminophenyl)[[3-(1,1,2,2-tetrafluoroethoxy)phenyl]methyl]amino]-1,1,1-trifluoro-2-propanol

Product 1

HCID 235060723-[[3-[(2-Methylpropyl)amino]phenyl][[3-(1,1,2,2-tetrafluoroethoxy)phenyl]methyl]amino]-1,1,1-trifluoro-2-propanolYield 29%

Reagents, catalysts & solvents 1

HCID 63651,1-DichloroethaneSolvent

Procedure

The 3-[(3-aminophenyl)[[3-(1,1,2,2-tetrafluoroethoxy)phenyl]methyl]amino]-1,1,1-trifluoro-2-propanol (50 mg, 0.12 mmol) was dissolved in 1 mL of dichloroethane. Acetic acid (8 μL, 0.14 mmol) followed by isobutyraldehyde (11.7 μL, 0.13 mmol) and solid NaBH(OAc)3 (37.3 mg, 0.18 mmol) were added. The solution was stirred at room temperature for 18 hours. The reaction was filtered through pre-wetted celite eluting with ethyl acetate. The solvent was evaporated, and the residue was purified by reverse phase HPLC eluting with 10% to 90% acetonitrile in water to afford 16.1 mg (29%) of the desired 3-[[3-[(2-methylpropyl)amino]phenyl][[3-(1,1,2,2-tetrafluoroethoxy)phenyl]methyl]amino]-1,1,1-trifluoro-2-propanol product as a yellow oil, which was greater pure by reverse phase HPLC analysis. HRMS calcd. for C22H26F7N2O2: 483.1883 [M+H]+, found: 483.1932. 1H NMR (CDCl3) δ1.0 (m, 6H), 2.0 (m, 1H), 3.0 (m, 2H), 3.6 (dd, 1H), 3.8 (dd, 1H), 4.3 (m, 1H), 4.6 (m, 2H), 5.9 (tt, 1H), 6.6 (d, 1H), 6.7 (d, 1H), 6.9-7.4 (m, 6H).

Workup

  1. additionwere added
  2. filtrationThe reaction was filtered through pre-wetted
  3. washcelite eluting with ethyl acetate
  4. customThe solvent was evaporated
  5. customthe residue was purified by reverse phase HPLC
  6. washeluting with 10% to 90% acetonitrile in water

Sources & evidence

ORD record
ord-4bf47b7671ef4243a558190b648c7f1a
Source dataset
uspto-grants-2002_11
Patent number
US06479552B2

Reaction notes

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