Cesium carbonate → 3-[[3-(2-Methyl-5-pyridyloxy)phenyl][[3-(trifluoro-methoxy)phenyl]methyl]amino]-1,1,1-trifluoro-2-propanol

HRID 1281349Notes

Reaction equation

HRID 1281349 reaction equation
Br[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:27])([F:26])[F:25])[CH:18]=2)[CH2:9][CH:10]([OH:15])[C:11]([F:14])([F:13])[F:12])[CH:5]=[CH:6][CH:7]=1.[OH:28][C:29]1[CH:30]=[CH:31][C:32]([CH3:35])=[N:33][CH:34]=1.C([O-])([O-])=O.[Cs+].[Cs+]>CC(N(C)C)=O>[CH3:35][C:32]1[CH:31]=[CH:30][C:29]([O:28][C:2]2[CH:3]=[C:4]([N:8]([CH2:16][C:17]3[CH:22]=[CH:21][CH:20]=[C:19]([O:23][C:24]([F:27])([F:26])[F:25])[CH:18]=3)[CH2:9][CH:10]([OH:15])[C:11]([F:14])([F:13])[F:12])[CH:5]=[CH:6][CH:7]=2)=[CH:34][N:33]=1

Participants

5

Reactant 3

HCID 10796Cesium carbonateHCID 142752-Methyl-5-hydroxypyridineHCID 219187833-[(3-Bromophenyl)[[3-(trifluoromethoxy)phenyl]methyl]amino]1,1,1-trifluoro-2-propanol

Product 1

HCID 235060733-[[3-(2-Methyl-5-pyridyloxy)phenyl][[3-(trifluoro-methoxy)phenyl]methyl]amino]-1,1,1-trifluoro-2-propanolYield 61%

Reagents, catalysts & solvents 1

HCID 31374DimethylacetamideSolvent

Conditions

Temperature
105 °C

Procedure

The 3-[(3-bromophenyl)[[3-(trifluoromethoxy)phenyl]methyl]amino]-1,1,1-trifluoro-2-propanol (500 mg, 1.1 mmol) product from EX-633B and 5-hydroxy-2-methylpyridine (262 mg, 2.4 mmol) were dissolved in dimethylacetamide (6 mL). Cs2CO3 (1.0 g, 3.1 mmol) and (CuCF3SO3)2C6H6 (150 mg) were added, and the mixture was heated to 105° C. for 96 h under an atmosphere of nitrogen, at which time HPLC analysis indicated that most of the starting materials had been consumed. After adding water, the reaction mixture was extracted with ether, and the ether extracts were washed with brine and dried over anhydrous MgSO4. The crude product was purified by flash column chromatography on silica gel eluting with ethyl acetate:hexane (1:12) to give 326 mg (61%) of the desired 3-[[3-(2-methyl-5-pyridyloxy)phenyl][[3-(trifluoro-methoxy)phenyl]methyl]amino]-1,1,1-trifluoro-2-propanol product as a light amber oil, 99% pure by HPLC analysis. 1H NMR (CDCl3) δ8.00 (s, 1H), 7.29 (t 1H), 6.99 (s, 1H), 7.02-7.15 (m, 5H), 6.46 (dd, 1H), 6.29 (t, 1H), 6.25 (dd, 1H), 4.88 (br s, 1H), 4.67 (ABq, 2H), 4.36 (m, 1H), 3.88 (dd, 1H), 3.56(dd, 1H), 2.49 (s, 3H). 19F NMR (CDCl3) δ−58.2, (s, 3F), −79.1 (d, 3F). HRMS calcd. for C23H20N2O3F6: 487.1456 [M+H]+, found: 487.1425.

Workup

  1. customhad been consumed
  2. additionAfter adding water
  3. extractionthe reaction mixture was extracted with ether
  4. washthe ether extracts were washed with brine
  5. dry with materialdried over anhydrous MgSO4
  6. customThe crude product was purified by flash column chromatography on silica gel eluting with ethyl acetate:hexane (1:12)

Sources & evidence

ORD record
ord-6173c1cfe92d4267b4f50dcd36137049
Source dataset
uspto-grants-2002_09
Patent number
US06451830B1

Reaction notes

Loading…