Diisopropylethylamine → HCID 178422875, compound

HRID 243481Notes

Reaction equation

HRID 243481 reaction equation
[F:1][C:2]1[CH:11]=[CH:10][C:9]2[N:12]=[C:13]([C@@H:14]([NH2:16])[CH3:15])[N:7]3[C:8]=2[C:3]=1[CH2:4][CH2:5][CH:6]3[CH3:17].Cl[C:19]1[N:27]=[CH:26][N:25]=[C:24]2[C:20]=1[N:21]=[CH:22][N:23]2C1CCCCO1.CCN(C(C)C)C(C)C>C(O)CCC>[F:1][C:2]1[CH:11]=[CH:10][C:9]2[N:12]=[C:13]([C@@H:14]([NH:16][C:19]3[N:27]=[CH:26][N:25]=[C:24]4[C:20]=3[N:21]=[CH:22][NH:23]4)[CH3:15])[N:7]3[C:8]=2[C:3]=1[CH2:4][CH2:5][CH:6]3[CH3:17]

Participants

5

Reactant 3

HCID 81531DiisopropylethylamineHCID 977406-chloro-9-(tetrahydro-2H-pyran-2-yl)-9H-purineHCID 68157756(S)-1-(7-Fluoro-4-methyl-5,6-dihydro-4H-imidazo[4,5,1-ij]quinolin-2-yl)ethylamine

Product 1

HCID 178422875HCID 178422875, compoundYield 34%

Reagents, catalysts & solvents 1

HCID 2631-ButanolSolvent

Conditions

Temperature
90 °C

Procedure

A mixture of (S)-1-(7-fluoro-4-methyl-5,6-dihydro-4H-imidazo[4,5,1-ij]quinolin-2-yl)ethylamine (15.8 mg, 0.0677 mmol), 6-chloro-9-(tetrahydropyran-2-yl)-9H-purine (17.8 mg, 0.0745 mmol), and DIPEA (0.0346 mL, 0.20 mmol) in n-butanol (0.5 mL) was stirred in a sealed vial at 90° C. for 16 h. After cooling to RT, volatiles were removed under reduced pressure. The residue was dissolved in MeOH (1.5 mL) and cooled in an ice bath. HCl in isopropanol (1.25 M, 1 mL) was added and the mixture stirred at 0° C. for 90 min and then concentrated under reduced pressure. The residue was dissolved in MeOH and loaded onto an Isolute® SCX-2 cartridge. The cartridge was washed with MeOH and the product eluted with 0.5 M NH3 in MeOH, further purification by column chromatography (Si—PCC, gradient 2-12% 2M NH3/MeOH in DCM) afforded 407 as a white solid (8 mg, 34%). Analytical data shows the product to be a mixture of diastereomers (ratio ˜1:1) which could be separated. LCMS (Method K): RT 2.59 & 2.62 min [M+H]+ 352. 1H NMR (CD3OD, 400 MHz): 8.25 & 8.24 (1H, 2 s), 8.10 & 8.08 (1H, 2 s), 7.39-7.35 (1H, m), 6.96-6.91 (1H, m), 5.93 & 5.82 (1H, 2 bs), 5.26-5.21 & 4.93-4.87 (1H, 2 m), 3.09-3.03 (1H, m), 2.97-2.88 (1H, m), 2.27-2.21 (1H, m), 2.15-2.03 (1H, m), 1.83 & 1.78 (3H, 2 d, J=6.9 Hz), 1.45 & 1.41 (3H, 2 d, J=6.7 Hz)

Workup

  1. temperatureAfter cooling to RT
  2. customvolatiles were removed under reduced pressure
  3. dissolutionThe residue was dissolved in MeOH (1.5 mL)
  4. temperaturecooled in an ice bath
  5. additionHCl in isopropanol (1.25 M, 1 mL) was added
  6. stirringthe mixture stirred at 0° C. for 90 min
  7. concentrationconcentrated under reduced pressure
  8. dissolutionThe residue was dissolved in MeOH
  9. washThe cartridge was washed with MeOH
  10. washthe product eluted with 0.5 M NH3 in MeOH, further purification by column chromatography (Si—PCC, gradient 2-12% 2M NH3/MeOH in DCM)

Sources & evidence

ORD record
ord-59d9aa91f68d4988acff315c3516c5c6
Source dataset
uspto-grants-2014_02
Patent number
US08653089B2

Reaction notes

Loading…