Dichloromethane → tert-Butyl 3-{3-[1-(4-amino-3-vinyl-1H-pyrazolo[3,4-d]pyrimidin-1-yl)ethyl]-5-chloro-2-ethoxy-6-fluorophenyl}azetidine-1-carboxylate

HRID 1499810Notes

Reaction equation

HRID 1499810 reaction equation
[NH2:1][C:2]1[N:7]=[CH:6][N:5]=[C:4]2[N:8]([CH:12]([C:14]3[C:15]([O:33][CH2:34][CH3:35])=[C:16]([CH:22]4[CH2:25][N:24]([C:26]([O:28][C:29]([CH3:32])([CH3:31])[CH3:30])=[O:27])[CH2:23]4)[C:17]([F:21])=[C:18]([Cl:20])[CH:19]=3)[CH3:13])[N:9]=[C:10](I)[C:3]=12.N1C=CC=[CH:38][CH:37]=1.C(B1OB(C=C)OB(C=C)O1)=C.ClCCl.C(=O)([O-])[O-].[K+].[K+]>O1CCOCC1.O.C(OCC)(=O)C.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[NH2:1][C:2]1[N:7]=[CH:6][N:5]=[C:4]2[N:8]([CH:12]([C:14]3[C:15]([O:33][CH2:34][CH3:35])=[C:16]([CH:22]4[CH2:25][N:24]([C:26]([O:28][C:29]([CH3:32])([CH3:31])[CH3:30])=[O:27])[CH2:23]4)[C:17]([F:21])=[C:18]([Cl:20])[CH:19]=3)[CH3:13])[N:9]=[C:10]([CH:37]=[CH2:38])[C:3]=12

Participants

9

Reactant 4

HCID 6344DichloromethaneHCID 11430Potassium CarbonateHCID 27348062,4,6-Trivinylboroxin-Pyridine ComplexHCID 86677733tert-Butyl 3-{3-[1-(4-amino-3-iodo-1H-pyrazolo[3,4-d]pyrimidin-1-yl)ethyl]-5-chloro-2-ethoxy-6-fluorophenyl}azetidine-1-carboxylate

Product 1

HCID 86677734tert-Butyl 3-{3-[1-(4-amino-3-vinyl-1H-pyrazolo[3,4-d]pyrimidin-1-yl)ethyl]-5-chloro-2-ethoxy-6-fluorophenyl}azetidine-1-carboxylateYield 65.4%

Reagents, catalysts & solvents 4

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)CatalystHCID 962WaterSolvent2×HCID 8857Ethyl AcetateSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
100 °C

Procedure

A mixture of tert-butyl 3-{3-[1-(4-amino-3-iodo-1H-pyrazolo[3,4-d]pyrimidin-1-yl)ethyl]-5-chloro-2-ethoxy-6-fluorophenyl}azetidine-1-carboxylate (1.32 g, 2.14 mmol), pyridine-trivinylboroxin (1:1) (0.51 g, 2.1 mmol), [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium(II), complex with dichloromethane (1:1) (90 mg, 0.1 mmol) and potassium carbonate (0.89 g, 6.4 mmol) in 1,4-dioxane (10 mL)/water (7 mL) was heated at 100° C. overnight. After cooled to room temperature, the reaction mixture was diluted with water and ethyl acetate. The aqueous layer was extracted with ethyl acetate. The combined extracts were washed with brine, dried over MgSO4, concentrated and purified on a silica gel column to give the desired product (0.71 g, 64%). LCMS calculated for C25H31ClFN6O3 (M+H)+: m/z=517.2; Found:517.2

Workup

  1. temperatureAfter cooled to room temperature
  2. extractionThe aqueous layer was extracted with ethyl acetate
  3. washThe combined extracts were washed with brine
  4. dry with materialdried over MgSO4
  5. concentrationconcentrated
  6. custompurified on a silica gel column

Sources & evidence

ORD record
ord-c7ca9f872f0341ccb00d6aae48bbf9e3
Source dataset
uspto-grants-2015_12
Patent number
US09199982B2

Reaction notes

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