Diisopropylethylamine → 4-Methyl-2-pyridin-2-yl-pyrimidine-5-carboxylic acid (5-fluoro-3,3-dimethyl-2,3-dihydro-indol-1-yl)-amide

HRID 2381916Notes

Reaction equation

HRID 2381916 reaction equation
[CH3:1][C:2]1[C:7]([C:8]([OH:10])=O)=[CH:6][N:5]=[C:4]([C:11]2[CH:16]=[CH:15][CH:14]=[CH:13][N:12]=2)[N:3]=1.CN(C(SC1[N+]([O-])=CC=CC=1)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.CCN(C(C)C)C(C)C.[F:48][C:49]1[CH:50]=[C:51]2[C:55](=[CH:56][CH:57]=1)[N:54]([NH2:58])[CH2:53][C:52]2([CH3:60])[CH3:59]>CN(C=O)C.O.CCOC(C)=O>[F:48][C:49]1[CH:50]=[C:51]2[C:55](=[CH:56][CH:57]=1)[N:54]([NH:58][C:8]([C:7]1[C:2]([CH3:1])=[N:3][C:4]([C:11]3[CH:16]=[CH:15][CH:14]=[CH:13][N:12]=3)=[N:5][CH:6]=1)=[O:10])[CH2:53][C:52]2([CH3:60])[CH3:59]

Participants

8

Reactant 4

HCID 81531DiisopropylethylamineHCID 10571248(Dimethylamino)-N,N-dimethyl((1-oxo-1lambda~5~-pyridin-2-yl)sulfanyl)methaniminium hexafluorophosphateHCID 617020254-Methyl-2-(pyridin-2-yl)pyrimidine-5-carboxylic acidHCID 68555288HCID 68555288, compound

Product 1

HCID 250995514-Methyl-2-pyridin-2-yl-pyrimidine-5-carboxylic acid (5-fluoro-3,3-dimethyl-2,3-dihydro-indol-1-yl)-amideYield 52%

Reagents, catalysts & solvents 3

HCID 962WaterSolventHCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
80 °C

Procedure

A solution of 4-methyl-2-pyridin-2-yl-pyrimidine-5-carboxylic acid (685 mg, 3.18 mmol), HOTT (1.29 g, 3.48 mmol), and DIPEA (1.6 mL, 9.16 mmol) in DMF (15 mL) is stirred at rt under N2 for 10 min. 5-Fluoro-3,3-dimethyl-2,3-dihydro-indol-1-ylamine (542 mg, 3.01 mmol) is added. The resulting mixture is stirred at 80° C. overnight. The mixture is cooled and portioned between EtOAc and water. The organic phase is separated, washed with saturated aqueous NaHCO3, water and brine, dried (MgSO4), filtered and concentrated in vacuo. The residue is purified by silica gel chromatography eluting with 2% MeOH in DCM to afford 4-methyl-2-pyridin-2-yl-pyrimidine-5-carboxylic acid (5-fluoro-3,3-dimethyl-2,3-dihydro-indol-1-yl)-amide (585 mg, 52%) as a solid. MS: 378 (M+H). 1H NMR (300 MHz, DMSO-d6): δ 10.46 (s, 1H), 9.02 (s, 1H), 8.78 (d, 1H), 8.42 (d, 1H), 8.00 (dt, 1H), 7.56 (dd, 1H), 7.06 (dd, 1H), 6.92 (dt, 1H), 6.76-6.72 (m, 1H), 3.32 (s, 2H), 2.70 (s, 3H), 1.33 (s, 6H).

Workup

  1. temperatureThe mixture is cooled
  2. customThe organic phase is separated
  3. washwashed with saturated aqueous NaHCO3, water and brine
  4. dry with materialdried (MgSO4)
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe residue is purified by silica gel chromatography
  8. washeluting with 2% MeOH in DCM

Sources & evidence

ORD record
ord-2c3282f88c5542c6a4491e765bf7a4ef
Source dataset
uspto-grants-2012_09
Patent number
US08258130B2

Reaction notes

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