Cesium carbonate → 1-[5-Chloro-8-(3-methoxypyrrolidin-1-yl)quinolin-7-yl]ethanone

HRID 1192617Notes

Reaction equation

FC(F)(F)S(O[C:7]1[C:8]([C:18](=[O:20])[CH3:19])=[CH:9][C:10]([Cl:17])=[C:11]2[C:16]=1[N:15]=[CH:14][CH:13]=[CH:12]2)(=O)=O.Cl.[CH3:24][O:25][CH:26]1[CH2:30][CH2:29][NH:28][CH2:27]1.C(=O)([O-])[O-].[Cs+].[Cs+]>O1CCCC1.ClCCl.C([O-])(=O)C.[Pd+2].C([O-])(=O)C.C1C=CC(P(C2C=CC3C(=CC=CC=3)C=2C2C3C(=CC=CC=3)C=CC=2P(C2C=CC=CC=2)C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[Cl:17][C:10]1[CH:9]=[C:8]([C:18](=[O:20])[CH3:19])[C:7]([N:28]2[CH2:29][CH2:30][CH:26]([O:25][CH3:24])[CH2:27]2)=[C:16]2[C:11]=1[CH:12]=[CH:13][CH:14]=[N:15]2

Participants

Conditions

Temperature: 65 °C

Procedure

A stirred mixture of 7-acetyl-5-chloroquinolin-8-yl trifluoromethanesulfonate (0.12 g, 0.34 mmol, from Example 47, Step 2), 3-methoxypyrrolidine hydrochloride (0.056 g, 0.41 mmol), palladium acetate (1.5 mg, 0.0068 mmol), (S)-(−)-2,2′-bis(diphenylphosphino)-1,1′-binaphthyl (6.3 mg, 0.010 mmol), and cesium carbonate (0.33 g, 1.0 mmol) in tetrahydrofuran (3 mL) was heated at 65° C. overnight. The mixture was cooled, diluted with dichloromethane and filtered. The filtrate was washed with brine, dried over MgSO4 and evaporated under reduced pressure. The residue was purified on silica gel (eluting with 0 to 10% methanol in dichloromethane) to give the desired product (44.5 mg, 43%). LCMS calculated for C16H18ClN2O2 (M+H)+: m/z=305.1; Found: 305.1.

Workup

temperatureThe mixture was cooled
filtrationfiltered
washThe filtrate was washed with brine
dry with materialdried over MgSO4
customevaporated under reduced pressure
customThe residue was purified on silica gel (eluting with 0 to 10% methanol in dichloromethane)

Sources & evidence

ORD record: ord-55fd99a48da6415c8d3d0f066ed31082
Source dataset: uspto-grants-2014_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08680108B2

Reaction notes

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