Triethylamine → Tert-butyl 4-(4-((4-((3-(2-methoxy-2-oxoethyl)pyridin-2-yl)ethynyl)-5-(trifluoromethyl)pyrimidin-2-yl)amino)phenyl)piperidine-1-carboxylate

HRID 1485258Notes

Reaction equation

HRID 1485258 reaction equation
[C:1]([C:3]1[C:8]([CH2:9][C:10]([O:12][CH3:13])=[O:11])=[CH:7][CH:6]=[CH:5][N:4]=1)#[CH:2].C(N(CC)CC)C.Cl[C:22]1[C:27]([C:28]([F:31])([F:30])[F:29])=[CH:26][N:25]=[C:24]([NH:32][C:33]2[CH:38]=[CH:37][C:36]([CH:39]3[CH2:44][CH2:43][N:42]([C:45]([O:47][C:48]([CH3:51])([CH3:50])[CH3:49])=[O:46])[CH2:41][CH2:40]3)=[CH:35][CH:34]=2)[N:23]=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>CN(C)C=O.CCOC(C)=O.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[CH3:13][O:12][C:10](=[O:11])[CH2:9][C:8]1[C:3]([C:1]#[C:2][C:26]2[C:27]([C:28]([F:29])([F:30])[F:31])=[CH:22][N:23]=[C:24]([NH:32][C:33]3[CH:38]=[CH:37][C:36]([CH:39]4[CH2:40][CH2:41][N:42]([C:45]([O:47][C:48]([CH3:51])([CH3:50])[CH3:49])=[O:46])[CH2:43][CH2:44]4)=[CH:35][CH:34]=3)[N:25]=2)=[N:4][CH:5]=[CH:6][CH:7]=1

Participants

8

Reactant 4

HCID 8471TriethylamineHCID 11776TriphenylphosphineHCID 86675716Tert-butyl 4-(4-((4-chloro-5-(trifluoromethyl)pyrimidin-2-yl)amino)phenyl)piperidine-1-carboxylateHCID 86675728Methyl 2-(2-ethynylpyridin-3-yl)acetate

Product 1

HCID 71209391Tert-butyl 4-(4-((4-((3-(2-methoxy-2-oxoethyl)pyridin-2-yl)ethynyl)-5-(trifluoromethyl)pyrimidin-2-yl)amino)phenyl)piperidine-1-carboxylateYield 72%

Reagents, catalysts & solvents 3

HCID 178418476HCID 178418476, compoundCatalystHCID 6228DimethylformamideSolvent2×HCID 8857Ethyl AcetateSolvent

Conditions

Temperature
120 °C

Procedure

A solution of methyl 2-(2-ethynylpyridin-3-yl)acetate (I120) (43.6 mg, 0.249 mmol) in dimethylformamide (2 mL) and triethylamine (107 μL, 0.765 mmol) were added to a mixture of tert-butyl 4-(4-((4-chloro-5-(trifluoromethyl)pyrimidin-2-yl)amino)phenyl)piperidine-1-carboxylate (I45) (87.4 mg, 0.191 mmol), Pd(PPh3)2Cl2 (13 mg, 0.019 mmol), Cu(I)I (5.5 mg, 0.029 mmol) and triphenylphosphine (7.5 mg, 0.017 mmol) in dimethylformamide (2 mL). The reaction mixture was heated under microwave irradiation at 120° C. for 10 minutes. The cooled mixture was diluted with EtOAc and passed through a plug of celite, washing with ethyl acetate (100 mL). The solvent was removed under reduced pressure and the residue partitioned between EtOAc (70 mL) and water (50 mL). The layers separated and the aqueous layer extracted with EtOAc (2×50 mL). The combined organic extracts were washed with brine (70 mL) and dried over Na2SO4. After filtration the solvent was removed under reduced pressure to give a dark brown residue. The residue was purified by column chromatography on silica gel (0-40% EtOAc in petroleum benzine 40-60° C.) to yield the title compound (I121) (81.5 mg, 72%) as a brown viscous oil which was used without further purification.

Workup

  1. washwashing with ethyl acetate (100 mL)
  2. customThe solvent was removed under reduced pressure
  3. customthe residue partitioned between EtOAc (70 mL) and water (50 mL)
  4. customThe layers separated
  5. extractionthe aqueous layer extracted with EtOAc (2×50 mL)
  6. washThe combined organic extracts were washed with brine (70 mL)
  7. dry with materialdried over Na2SO4
  8. filtrationAfter filtration the solvent
  9. customwas removed under reduced pressure
  10. customto give a dark brown residue
  11. customThe residue was purified by column chromatography on silica gel (0-40% EtOAc in petroleum benzine 40-60° C.)

Sources & evidence

ORD record
ord-14cfbf705add4e4d9ca36646c82fcada
Source dataset
uspto-grants-2016_08
Patent number
US09421205B2

Reaction notes

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