Sulfuric Acid → N2-(4-(4-chloro-1H-imidazol-1-yl)-3-methoxyphenyl)-N4-isopropyl-7-phenyl-6,7-dihydro-5H-cyclopenta[d]pyrimidine-2,4-diamine

HRID 475882Notes

Reaction equation

HRID 475882 reaction equation
Cl[C:2]1[N:3]=[C:4]([NH:17][CH:18]([CH3:20])[CH3:19])[C:5]2[CH2:10][CH2:9][CH:8]([C:11]3[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=3)[C:6]=2[N:7]=1.[Cl:21][C:22]1[N:23]=[CH:24][N:25]([C:27]2[CH:33]=[CH:32][C:30]([NH2:31])=[CH:29][C:28]=2[O:34][CH3:35])[CH:26]=1.OS(O)(=O)=O.CCOC(C)=O>CN(C=O)C>[Cl:21][C:22]1[N:23]=[CH:24][N:25]([C:27]2[CH:33]=[CH:32][C:30]([NH:31][C:2]3[N:3]=[C:4]([NH:17][CH:18]([CH3:20])[CH3:19])[C:5]4[CH2:10][CH2:9][CH:8]([C:11]5[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=5)[C:6]=4[N:7]=3)=[CH:29][C:28]=2[O:34][CH3:35])[CH:26]=1

Participants

6

Reactant 4

HCID 1118Sulfuric AcidHCID 8857Ethyl AcetateHCID 580754032-chloro-N-isopropyl-7-phenyl-6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-amineHCID 580757574-(4-chloro-1H-imidazol-1-yl)-3-methoxyaniline

Product 1

HCID 50913786N2-(4-(4-chloro-1H-imidazol-1-yl)-3-methoxyphenyl)-N4-isopropyl-7-phenyl-6,7-dihydro-5H-cyclopenta[d]pyrimidine-2,4-diamineYield 49.8%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
94 °C

Procedure

To a solution of 2-chloro-N-isopropyl-7-phenyl-6,7-dihydro-5H-cyclopenta[d]pyrimidin-4-amine (154 mg, 0.535 mmol) and 4-(4-chloro-1H-imidazol-1-yl)-3-methoxyaniline (114 mg, 0.508 mmol) in DMF (2.5 mL) was added Conc. H2SO4 (0.040 mL, 0.749 mmol). The mixture was stirred at 94° C. for 20 hrs. After cooled down to room temperature, 100 mL of EtOAc was added, washed with saturated NaHCO3/H2O, dried over Na2SO4, and removed. The residue was purified via Biotage (12 g, hexanes-100% EtOAC) to give N2-(4-(4-chloro-1H-imidazol-1-yl)-3-methoxyphenyl)-N4-isopropyl-7-phenyl-6,7-dihydro-5H-cyclopenta[d]pyrimidine-2,4-diamine (120 mg, 0.253 mmol, 47.2% yield). LC-MS (M+H)+=475.2. 1H NMR (500 MHz, CDCl3) δ ppm 7.92 (1H, d, J=2.1 Hz), 7.51 (1H, d, J=1.5 Hz), 7.31 (2H, d, J=7.3 Hz), 7.22-7.25 (2H, m), 7.22 (1H, s), 7.08 (1H, s), 7.04 (1H, d, J=8.5 Hz), 7.01 (1H, d, J=1.5 Hz), 6.74 (1H, dd, J=8.4, 2.3 Hz), 4.38-4.46 (1H, m), 4.33 (1H, d, J=7.9 Hz), 4.18-4.24 (1H, m), 3.49 (3H, s), 2.72-2.80 (1H, m), 2.61-2.71 (2H, m), 2.07-2.14 (1H, m), 1.33 (6H, t, J=6.6 Hz).

Workup

  1. temperatureAfter cooled down to room temperature
  2. washwashed with saturated NaHCO3/H2O
  3. dry with materialdried over Na2SO4
  4. customremoved
  5. customThe residue was purified via Biotage (12 g, hexanes-100% EtOAC)

Sources & evidence

ORD record
ord-741ca332a30543d0bd8421fd7d31c000
Source dataset
uspto-grants-2014_01
Patent number
US08637525B2

Reaction notes

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