Cesium carbonate → 4-chloro-6-[(R)-1-[4-chloro-2-(3-methylpyrazol-1-yl)phenyl]-2,2,2-trifluoroethoxy]-2-methylsulfanylpyrimidine

HRID 1499184Notes

Reaction equation

HRID 1499184 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C@@H:8]([OH:13])[C:9]([F:12])([F:11])[F:10])=[C:4]([N:14]2[CH:18]=[CH:17][C:16]([CH3:19])=[N:15]2)[CH:3]=1.[Cl:20][C:21]1[CH:26]=[C:25](Cl)[N:24]=[C:23]([S:28][CH3:29])[N:22]=1.C([O-])([O-])=O.[Cs+].[Cs+]>O1CCOCC1>[Cl:20][C:21]1[CH:26]=[C:25]([O:13][C@H:8]([C:5]2[CH:6]=[CH:7][C:2]([Cl:1])=[CH:3][C:4]=2[N:14]2[CH:18]=[CH:17][C:16]([CH3:19])=[N:15]2)[C:9]([F:12])([F:11])[F:10])[N:24]=[C:23]([S:28][CH3:29])[N:22]=1

Participants

5

Reactant 3

HCID 10796Cesium carbonateHCID 805314,6-Dichloro-2-(methylthio)pyrimidineHCID 25210912(alphaR)-4-Chloro-2-(3-methyl-1H-pyrazol-1-yl)-alpha-(trifluoromethyl)benzenemethanol

Product 1

HCID 1179528054-chloro-6-[(R)-1-[4-chloro-2-(3-methylpyrazol-1-yl)phenyl]-2,2,2-trifluoroethoxy]-2-methylsulfanylpyrimidine

Reagents, catalysts & solvents 1

HCID 312751,4-DioxaneSolvent

Conditions

Temperature
70 °C

Procedure

To a solution of (R)-1-[4-chloro-2-(3-methylpyrazol-1-yl)phenyl]-2,2,2-trifluoroethanol (5.00 g, 17.2 mmol) and 4,6-dichloro-2-(methylthio)pyrimidine (3.36 g, 17.2 mmol) in dioxane (250 mL) was added Cs2CO3 (16.8 g, 51.6 mmol). The reaction mixture was then heated to 70° C. for 90 h, then cooled to RT. The reaction mixture was quenched with water and extracted with EtOAc. The combined organic layers were washed with brine, dried over Na2SO4, filtered, and concentrated in vacuo. Purification on a 120 g Isco RediSep silica cartridge (EtOAc:heptane) provided 4-chloro-6-[(R)-1-[4-chloro-2-(3-methylpyrazol-1-yl)phenyl]-2,2,2-trifluoroethoxy]-2-methylsulfanylpyrimidine as a white solid.

Workup

  1. temperaturecooled to RT
  2. customThe reaction mixture was quenched with water
  3. extractionextracted with EtOAc
  4. washThe combined organic layers were washed with brine
  5. dry with materialdried over Na2SO4
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo
  8. customPurification on a 120 g Isco RediSep silica cartridge (EtOAc:heptane)

Sources & evidence

ORD record
ord-006635a34e214e9b85d59510f72cb88c
Source dataset
uspto-grants-2015_12
Patent number
US09199994B2

Reaction notes

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