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Cesium fluoride → ethyl 8-(4-amino-2,5-difluoro-phenyl)-1-cyclopropyl-7-fluoro-9-methyl-4-oxo-4H-quinolizine-3-carboxylate

HRID 1478343
Notes
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Reaction equation

HRID 1478343 reaction equation
Cl[C:2]1[C:3]([F:22])=[CH:4][N:5]2[C:10]([C:11]=1[CH3:12])=[C:9]([CH:13]1[CH2:15][CH2:14]1)[CH:8]=[C:7]([C:16]([O:18][CH2:19][CH3:20])=[O:17])[C:6]2=[O:21].[F:23][C:24]1[CH:30]=[C:29](B2OC(C)(C)C(C)(C)O2)[C:28]([F:40])=[CH:27][C:25]=1[NH2:26].C1(P(C2CCCCC2)C2CCCCC2)CCCCC1.[F-].[Cs+]>C([O-])(=O)C.[Pd+2].C([O-])(=O)C.C(#N)C>[NH2:26][C:25]1[C:24]([F:23])=[CH:30][C:29]([C:2]2[C:3]([F:22])=[CH:4][N:5]3[C:10]([C:11]=2[CH3:12])=[C:9]([CH:13]2[CH2:15][CH2:14]2)[CH:8]=[C:7]([C:16]([O:18][CH2:19][CH3:20])=[O:17])[C:6]3=[O:21])=[C:28]([F:40])[CH:27]=1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

7

Reactant 4

HCID 25953Cesium fluorideHCID 75806TricyclohexylphosphineHCID 9927245Ethyl 8-chloro-1-cyclopropyl-7-fluoro-9-methyl-4-oxo-4H-quinolizine-3-carboxylateHCID 579551442,5-Difluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-YL)aniline

Product 1

HCID 86696745ethyl 8-(4-amino-2,5-difluoro-phenyl)-1-cyclopropyl-7-fluoro-9-methyl-4-oxo-4H-quinolizine-3-carboxylate
Yield 75%

Reagents, catalysts & solvents 2

HCID 167845palladium(II) acetateCatalystHCID 6342AcetonitrileSolvent

Conditions

Temperature
85 °C

Procedure

Ethyl 8-chloro-1-cyclopropyl-7-fluoro-9-methyl-4-oxo-4H-quinolizine-3-carboxylate (100 mg, 0.32 mmol), 2,5-difluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-aniline (667 mg, 2.06 mmol), tricyclohexylphosphine (105 mg, 0.41 mmol) and cesium fluoride (482 mg, 3.2 mmol) were added to ACN (5 mL). The reaction mixture was degassed with argon. Palladium(II) acetate (24 mg, 0.11 mmol) was added. The reaction mixture was heated at 85° C. for 2 h. The reaction mixture was cooled and evaporated in vacuum. Purification by flash silica column chromatography (DCM:MeOH) (1:0 to 9:1) afforded the title compound as a yellow solid (100 mg, 35%).

Workup

  1. customThe reaction mixture was degassed with argon
  2. temperatureThe reaction mixture was cooled
  3. customevaporated in vacuum
  4. customPurification by flash silica column chromatography (DCM:MeOH) (1:0 to 9:1)

Sources & evidence

ORD record
ord-ab44a33b63cc40bab74ffde5678b426b
Source dataset
uspto-grants-2016_08
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09403818B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes