Hydrochloric Acid → HCID 25096586, compound

HRID 1922124Notes

Reaction equation

HRID 1922124 reaction equation
C[O:2][C:3](=[O:31])[CH2:4][O:5][C:6]1[CH:15]=[CH:14][C:13]([F:16])=[C:12]2[C:7]=1[C:8]([O:27][CH:28]([F:30])[F:29])=[C:9]([CH2:19][C:20]1[CH:25]=[CH:24][C:23](Br)=[CH:22][CH:21]=1)[C:10]([CH2:17][CH3:18])=[N:11]2.[CH:32]([N:35]1[CH:39]=[CH:38][C:37](B2OC(C)(C)C(C)(C)O2)=[N:36]1)([CH3:34])[CH3:33].C(=O)([O-])[O-].[Cs+].[Cs+].Cl>CN(C)C=O>[F:30][CH:28]([F:29])[O:27][C:8]1[C:7]2[C:12](=[C:13]([F:16])[CH:14]=[CH:15][C:6]=2[O:5][CH2:4][C:3]([OH:2])=[O:31])[N:11]=[C:10]([CH2:17][CH3:18])[C:9]=1[CH2:19][C:20]1[CH:25]=[CH:24][C:23]([C:37]2[CH:38]=[CH:39][N:35]([CH:32]([CH3:34])[CH3:33])[N:36]=2)=[CH:22][CH:21]=1

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 10796Cesium carbonateHCID 665094051-Isopropyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazoleHCID 66717642HCID 66717642, compound

Product 1

HCID 25096586HCID 25096586, compoundYield 27.2%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
140 °C

Procedure

A mixture of [3-(4-bromobenzyl)-4-difluoromethoxy-2-ethyl-8-fluoroquinolin-5-yloxy]acetic acid methyl ester (0.05 g), 1-isopropyl-3-(4,4,5,5-tetramethyl[1,3,2]dioxaborolan-2-yl)-1H-pyrazole (0.047 g), tetrakis(triphenylphospine)palladium (0) (0.012 g), N,N-dimethylformamide (0.3 mL) and 2.0 M aqueous cesium carbonate solution (0.2 mL) was heated by microwave irradiation at 140° C. for 6 minutes. The mixture was cooled to room temperature, acidified by the addition of 1.0 M aqueous hydrochloric acid solution and then extracted with ethyl acetate. The combined extracts were washed with saturated aqueous sodium chloride solution, dried over magnesium sulfate and then concentrated under reduced pressure. Purification of the residue by preparative reverse-phase HPLC gave title compound (0.014 g).

Workup

  1. temperatureThe mixture was cooled to room temperature
  2. extractionextracted with ethyl acetate
  3. washThe combined extracts were washed with saturated aqueous sodium chloride solution
  4. dry with materialdried over magnesium sulfate
  5. concentrationconcentrated under reduced pressure
  6. customPurification of the residue by preparative reverse-phase HPLC

Sources & evidence

ORD record
ord-303359581b184341b4441fbea1261e31
Source dataset
uspto-grants-2012_05
Patent number
US08173812B2

Reaction notes

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