Triethylamine → N-cyclopentyl-3-[2-(cyclopentylamino)-4-pyrimidinyl]-2-(4-phenoxyphenyl)pyrazolo[1,5-a]pyridin-7-amine

HRID 861114Notes

Reaction equation

HRID 861114 reaction equation
[CH:1]1([NH:6][C:7]2[N:12]3[N:13]=[C:14]([C:28]4[CH:33]=[CH:32][C:31]([OH:34])=[CH:30][CH:29]=4)[C:15]([C:16]4[CH:21]=[CH:20][N:19]=[C:18]([NH:22][CH:23]5[CH2:27][CH2:26][CH2:25][CH2:24]5)[N:17]=4)=[C:11]3[CH:10]=[CH:9][CH:8]=2)[CH2:5][CH2:4][CH2:3][CH2:2]1.[C:35]1(B(O)O)[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=1.C(N(CC)CC)C>ClCCl.C([O-])(=O)C.[Cu+2].C([O-])(=O)C>[CH:1]1([NH:6][C:7]2[N:12]3[N:13]=[C:14]([C:28]4[CH:29]=[CH:30][C:31]([O:34][C:35]5[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=5)=[CH:32][CH:33]=4)[C:15]([C:16]4[CH:21]=[CH:20][N:19]=[C:18]([NH:22][CH:23]5[CH2:24][CH2:25][CH2:26][CH2:27]5)[N:17]=4)=[C:11]3[CH:10]=[CH:9][CH:8]=2)[CH2:2][CH2:3][CH2:4][CH2:5]1

Participants

6

Reactant 3

HCID 8471TriethylamineHCID 66827Phenylboronic AcidHCID 1354695774-{7-(Cyclopentylamino)-3-[2-(cyclopentylamino)-4-pyrimidinyl]pyrazolo[1,5-a]pyridin-2-yl}phenol

Product 1

HCID 10302028N-cyclopentyl-3-[2-(cyclopentylamino)-4-pyrimidinyl]-2-(4-phenoxyphenyl)pyrazolo[1,5-a]pyridin-7-amineYield 12%

Reagents, catalysts & solvents 2

HCID 8895Cupric acetateCatalystHCID 6344DichloromethaneSolvent

Procedure

To a solution of 4-{7-(cyclopentylamino)-3-[2-(cyclopentylamino)-4-pyrimidinyl]pyrazolo[1,5-a]pyridin-2-yl}phenol (100 mg, 0.22 mmol) in dichloromethane (5 mL) was added copper (II) acetate (40 mg, 0.22 mmol), phenylboronic acid (80 mg, 0.66 mmol), triethylamine (92 μL, 0.66 mmol) and molecular sieves. The mixture was stirred at room temperature for 24 hours. Solids were removed by filtration and the filtrate was concentrated, followed by purification by flash chromatography (2:3 ethyl acetate:hexanes) to give N-cyclopentyl-3-[2-(cyclopentylamino)-4-pyrimidinyl]-2-(4-phenoxyphenyl)pyrazolo[1,5-a]pyridin-7-amine (14 mg, 12%) as a yellow foam. 1H NMR (CDCl3): δ 8.05–6.85 (m, 12 H), 6.40 (d, 1H), 6.06 (m, 2H), 5.12 (d, 1H), 4.40 (m, 1H) 4.01 (m, 1H), 2.20–2.09 (m, 4H), 1.82–1.59 (m, 12H); MS m/z 531 (M+1).

Workup

  1. customSolids were removed by filtration
  2. concentrationthe filtrate was concentrated
  3. customfollowed by purification by flash chromatography (2:3 ethyl acetate:hexanes)

Sources & evidence

ORD record
ord-7c5fd5548c954bcbaa56c0c0866258b0
Source dataset
uspto-grants-2006_12
Patent number
US07153855B2

Reaction notes

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