Methanol → 4-[(3R)-3-Dimethylaminopyrrolidin-1-yl]-6-methoxy-N-[5-methyl-4-(1-methylindol-3-yl)pyrimidin-2-yl]benzene-1,3-diamine

HRID 1842739Notes

Reaction equation

HRID 1842739 reaction equation
[CH3:1][N:2]([CH3:37])[C@@H:3]1[CH2:7][CH2:6][N:5]([C:8]2[C:13]([N+:14]([O-])=O)=[CH:12][C:11]([NH:17][C:18]3[N:23]=[C:22]([C:24]4[C:32]5[C:27](=[CH:28][CH:29]=[CH:30][CH:31]=5)[N:26]([CH3:33])[CH:25]=4)[C:21]([CH3:34])=[CH:20][N:19]=3)=[C:10]([O:35][CH3:36])[CH:9]=2)[CH2:4]1.[NH4+].[Cl-].C(Cl)Cl.CO>C(O)C.O.[Fe]>[CH3:37][N:2]([CH3:1])[C@@H:3]1[CH2:7][CH2:6][N:5]([C:8]2[CH:9]=[C:10]([O:35][CH3:36])[C:11]([NH:17][C:18]3[N:23]=[C:22]([C:24]4[C:32]5[C:27](=[CH:28][CH:29]=[CH:30][CH:31]=5)[N:26]([CH3:33])[CH:25]=4)[C:21]([CH3:34])=[CH:20][N:19]=3)=[CH:12][C:13]=2[NH2:14])[CH2:4]1

Participants

8

Reactant 4

HCID 887MethanolHCID 6344DichloromethaneHCID 25517Ammonium ChlorideHCID 71269904N-{4-[(3R)-3-dimethylaminopyrrolidin-1-yl]-2-methoxy-5-nitrophenyl}-5-methyl-4-(1-methylindol-3-yl)pyrimidin-2-amine2×

Product 1

HCID 866772564-[(3R)-3-Dimethylaminopyrrolidin-1-yl]-6-methoxy-N-[5-methyl-4-(1-methylindol-3-yl)pyrimidin-2-yl]benzene-1,3-diamineYield 84%

Reagents, catalysts & solvents 3

HCID 23925IronCatalystHCID 702EthanolSolventHCID 962WaterSolvent

Procedure

A mixture of N-{4-[(3R)-3-dimethylaminopyrrolidin-1-yl]-2-methoxy-5-nitrophenyl}-5-methyl-4-(1-methylindol-3-yl)pyrimidin-2-amine (Intermediate 84, 325 mg, 0.65 mmol), iron (217 mg, 3.89 mmol) and NH4Cl (24.26 mg, 0.45 mmol) in ethanol (16 mL) and water (5.33 mL) was heated at reflux for 3 h. The mixture was then cooled and concentrated in vacuo to give a thick slurry. CH2Cl2 (100 mL) and CH3OH (10 mL) were then added and the mixture was stirred for 0.25 h and then filtered. The filter cake was washed with further CH2Cl2 and CH3OH and the combined organics were dried (MgSO4) and concentrated in vacuo. Purification by FCC, eluting with 1-8% methanolic ammonia in CH2Cl2 gave the title compound (257 mg, 84%) as a yellow dry film; 1H NMR: 1.76 (1H, td), 2.03 (1H, dt), 2.18 (6H, s), 2.37 (3H, s), 2.79-2.87 (1H, m), 2.88-2.97 (2H, m), 3.08-3.14 (1H, m), 3.18 (1H, dd), 3.73 (3H, s), 3.90 (3H, s), 4.19 (2H, s), 6.70 (1H, s), 7.13 (1H, t), 7.25 (1H, t), 7.44 (1H, s), 7.51 (1H, d), 7.65 (1H, s), 8.04 (1H, s), 8.19 (1H, s), 8.46 (1H, d); m/z: ES+ MH+ 472.35.

Workup

  1. temperaturewas heated
  2. temperatureat reflux for 3 h
  3. temperatureThe mixture was then cooled
  4. concentrationconcentrated in vacuo
  5. customto give a thick slurry
  6. filtrationfiltered
  7. washThe filter cake was washed with further CH2Cl2 and CH3OH
  8. dry with materialthe combined organics were dried (MgSO4)
  9. concentrationconcentrated in vacuo
  10. customPurification by FCC
  11. washeluting with 1-8% methanolic ammonia in CH2Cl2

Sources & evidence

ORD record
ord-1e4cd92e35e94ccea9d58a13f7513561
Source dataset
uspto-grants-2015_02
Patent number
US08946235B2

Reaction notes

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