Triethylamine → 1-(4-((2-hydroxyethyl)(phenyl)amino)-2-(4-(oxazol-5-yl)phenylamino)-7,8-dihydropyrido[4,3-d]pyrimidin-6(5H)-yl)-2-methoxyethanone

HRID 1930562Notes

Reaction equation

HRID 1930562 reaction equation
[O:1]1[C:5]([C:6]2[CH:11]=[CH:10][C:9]([NH:12][C:13]3[N:14]=[C:15]([N:23]([C:27]4[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=4)[CH2:24][CH2:25][OH:26])[C:16]4[CH2:22][NH:21][CH2:20][CH2:19][C:17]=4[N:18]=3)=[CH:8][CH:7]=2)=[CH:4][N:3]=[CH:2]1.C(N(CC)CC)C.[CH3:40][O:41][CH2:42][C:43](Cl)=[O:44]>CO.ClCCl>[OH:26][CH2:25][CH2:24][N:23]([C:27]1[CH:28]=[CH:29][CH:30]=[CH:31][CH:32]=1)[C:15]1[C:16]2[CH2:22][N:21]([C:43](=[O:44])[CH2:42][O:41][CH3:40])[CH2:20][CH2:19][C:17]=2[N:18]=[C:13]([NH:12][C:9]2[CH:10]=[CH:11][C:6]([C:5]3[O:1][CH:2]=[N:3][CH:4]=3)=[CH:7][CH:8]=2)[N:14]=1

Participants

6

Reactant 3

HCID 8471TriethylamineHCID 96623Methoxyacetyl chlorideHCID 462000502-((2-(4-(Oxazol-5-yl)phenylamino)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-yl)(phenyl)amino)ethanol

Product 1

HCID 462005131-(4-((2-hydroxyethyl)(phenyl)amino)-2-(4-(oxazol-5-yl)phenylamino)-7,8-dihydropyrido[4,3-d]pyrimidin-6(5H)-yl)-2-methoxyethanoneYield 18.6%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 6344DichloromethaneSolvent

Procedure

2-((2-(4-(Oxazol-5-yl)phenylamino)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-yl)(phenyl)amino)ethanol (40 mg, 0.09 mmol, Example 1) was dissolved in methanol (0.5 mL) and dichloromethane (3 mL). Triethylamine (0.013 mL, 0.09 mmol) was added followed by methoxyacetyl chloride (8.55 μL, 0.09 mmol). The reaction mixture was stirred at room temperature for 2 h and the solvent was evaporated under reduced pressure. The crude was dissolved in few drops of dimethylformamide and acetonitrile, filtered and purified by preparative HPLC yielding 1-(4-((2-hydroxyethyl)(phenyl)amino)-2-(4-(oxazol-5-yl)phenylamino)-7,8-dihydropyrido[4,3-d]pyrimidin-6(5H)-yl)-2-methoxyethanone (8.4 mg, 16.96%). HPLC, ms detection: (ESI) (M+1) m/z 501;

Workup

  1. customthe solvent was evaporated under reduced pressure
  2. dissolutionThe crude was dissolved in few drops of dimethylformamide and acetonitrile
  3. filtrationfiltered
  4. custompurified by preparative HPLC

Sources & evidence

ORD record
ord-e9d040c8af8d4f50a596c20b75f6a11f
Source dataset
uspto-grants-2012_05
Patent number
US08188101B2

Reaction notes

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