Cesium carbonate → [5-(4H-Pyrazol-4-yl)-thiophen-3-yl]-(octahydro-quinolin-1-yl)-methanone

HRID 2068614Notes

Reaction equation

HRID 2068614 reaction equation
Br[C:2]1[S:6][CH:5]=[C:4]([C:7]([N:9]2[C@@H:18]3[C@@H:13]([CH2:14][CH2:15][CH2:16][CH2:17]3)[CH2:12][CH2:11][CH2:10]2)=[O:8])[CH:3]=1.C(=O)([O-])[O-].[Cs+].[Cs+].[NH:25]1[CH:29]=[C:28](B(O)O)[CH:27]=[N:26]1>COCCOC.O.C(OCC)(=O)C.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[Pd]>[N:25]1[N:26]=[CH:27][CH:28]([C:2]2[S:6][CH:5]=[C:4]([C:7]([N:9]3[CH:18]4[CH:13]([CH2:14][CH2:15][CH2:16][CH2:17]4)[CH2:12][CH2:11][CH2:10]3)=[O:8])[CH:3]=2)[CH:29]=1

Participants

8

Reactant 3

HCID 10796Cesium carbonateHCID 177502781H-Pyrazole-4-boronic acidHCID 86646712HCID 86646712, compound

Product 1

HCID 44224461[5-(4H-Pyrazol-4-yl)-thiophen-3-yl]-(octahydro-quinolin-1-yl)-methanoneYield 21.1%

Reagents, catalysts & solvents 4

HCID 11979704Tetrakis(triphenylphosphine)palladiumCatalystHCID 962WaterSolventHCID 80711,2-DimethoxyethaneSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
140 °C

Procedure

cis-(5-Bromo-thiophen-3-yl)-(octahydro-quinolin-1-yl)-methanone (0.15 mmol) was added to a solution of caesium carbonate (0.15 mmol), 4-pyrazoleboronic acid (0.3 mmol) and palladium tetrakis(triphenylphosphine) (0.03 mmol) in DME (6 mL), IMS (2 mL) and water (0.001 mL). The reaction mixture was heated by microwave irradiation to 140° C. for 20 minutes and then diluted with ethyl acetate (5 mL) and washed with water. The organic solution was dried and filtered and the solvent evaporated. The residue was purified by HPLC, eluting with 10%-98% acetonitrile in water (0.1% formic acid) over 30 minutes. The fractions containing the desired product were concentrated under vacuum to give the title compound as a pale yellow oil (10 mg). LCMS m/z 316.27 [M+H]+ RT=9.34 min. (Analytical Method 2).

Workup

  1. washwashed with water
  2. customThe organic solution was dried
  3. filtrationfiltered
  4. customthe solvent evaporated
  5. customThe residue was purified by HPLC
  6. washeluting with 10%-98% acetonitrile in water (0.1% formic acid) over 30 minutes
  7. additionThe fractions containing the desired product
  8. concentrationwere concentrated under vacuum

Sources & evidence

ORD record
ord-15450053dadb43349e5e0bfbe9f2667b
Source dataset
uspto-grants-2012_10
Patent number
US08299063B2

Reaction notes

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