Diethyl Ether → 2-(3-(allyloxy)phenyl]-N-cyclopentyl-3-[2-(cyclopentylamino)-4-pyrimidinyl]imidazo[1,2-a]pyridin-8-amine

HRID 456700Notes

Reaction equation

HRID 456700 reaction equation
[CH:1]1([NH:6][C:7]2[C:8]3[N:9]([C:13]([C:23]4[CH:28]=[CH:27][N:26]=[C:25]([NH:29][CH:30]5[CH2:34][CH2:33][CH2:32][CH2:31]5)[N:24]=4)=[C:14]([C:16]4[CH:17]=[C:18]([OH:22])[CH:19]=[CH:20][CH:21]=4)[N:15]=3)[CH:10]=[CH:11][CH:12]=2)[CH2:5][CH2:4][CH2:3][CH2:2]1.C(=O)([O-])[O-].[Cs+].[Cs+].[CH2:41](Br)[CH:42]=[CH2:43].CCOCC>CN(C)C=O.O>[CH2:43]([O:22][C:18]1[CH:17]=[C:16]([C:14]2[N:15]=[C:8]3[C:7]([NH:6][CH:1]4[CH2:5][CH2:4][CH2:3][CH2:2]4)=[CH:12][CH:11]=[CH:10][N:9]3[C:13]=2[C:23]2[CH:28]=[CH:27][N:26]=[C:25]([NH:29][CH:30]3[CH2:34][CH2:33][CH2:32][CH2:31]3)[N:24]=2)[CH:21]=[CH:20][CH:19]=1)[CH:42]=[CH2:41]

Participants

7

Reactant 4

HCID 3283Diethyl EtherHCID 7841Allyl bromideHCID 10796Cesium carbonateHCID 101390603-[8-(Cyclopentylamino)-3-[2-(cyclopentylamino)pyrimidin-4-yl]imidazo[1,2-a]pyridin-2-yl]phenol

Product 1

HCID 101414512-(3-(allyloxy)phenyl]-N-cyclopentyl-3-[2-(cyclopentylamino)-4-pyrimidinyl]imidazo[1,2-a]pyridin-8-amineYield 77%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

To a solution of 3-{8-(cyclopentylamino)-3-[2-(cyclopentylamino)-4-pyrimidinyl]imidazo[1,2-α]pyridin-2-yl}phenol (12 mg, 0.03 mmol) in N,N-dimethylformamide was added cesium carbonate (11 mg, 0.04 mmol) followed by allyl bromide (0.1 mL, 1.15 mmol). The resulting mixture was stirred at room temperature for 5 hours. Ether was added followed by water. The organic layer was washed with brine. The aqueous layer was extracted with ether and the combined organics were dried over magnesium sulfate. Filtration and concentration followed by flash chromatography (2:1 hexanes:ethyl acetate) provided 2-[3-(allyloxy)phenyl]-N-cyclopentyl-3-[2-(cyclopentylamino)-4-pyrimidinyl]imidazo[1,2-α]pyridin-8-amine (10 mg, 77%) as an oil. 1H NMR (CDCl3): δ 8.87 (broad, 1H), 8.01 (d, 1H), 7.30 (t, 1H), 7.20–7.17 (m, 2H), 6.95 (m, 1H), 6.78 (t, 1H), 6.38 (d, 1H), 6.28 (d, 1H), 6.03 (m, 1H), 30 5.43–5.24 (m, 4H), 4.54 (d, 2H), 4.34 (m, 1H), 3.91 (m, 1H), 2.12–2.04 (m, 4H), 1.82–1.55 (m, 12H); MS m/z 495 (M+1). This material was treated with anhydrous hydrochloric acid in ether to provide the corresponding hydrochoride salt as a yellow solid.

Workup

  1. washThe organic layer was washed with brine
  2. extractionThe aqueous layer was extracted with ether
  3. dry with materialthe combined organics were dried over magnesium sulfate
  4. filtrationFiltration and concentration

Sources & evidence

ORD record
ord-3369ef6d311840b7a5b9b14ec8c9e975
Source dataset
uspto-grants-2007_03
Patent number
US07186714B2

Reaction notes

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