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

HRID 1930561Notes

Reaction equation

HRID 1930561 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.Cl.[CH3:41][N:42]([CH2:44][C:45](Cl)=[O:46])[CH3:43]>CO.ClCCl>[CH3:41][N:42]([CH3:43])[CH2:44][C:45]([N:21]1[CH2:20][CH2:19][C:17]2[N:18]=[C:13]([NH:12][C:9]3[CH:10]=[CH:11][C:6]([C:5]4[O:1][CH:2]=[N:3][CH:4]=4)=[CH:7][CH:8]=3)[N:14]=[C:15]([N:23]([CH2:24][CH2:25][OH:26])[C:27]3[CH:28]=[CH:29][CH:30]=[CH:31][CH:32]=3)[C:16]=2[CH2:22]1)=[O:46]

Participants

6

Reactant 3

HCID 8471TriethylamineHCID 139949912-(Dimethylamino)acetyl chloride hydrochlorideHCID 462000502-((2-(4-(Oxazol-5-yl)phenylamino)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-yl)(phenyl)amino)ethanol

Product 1

HCID 462005122-(dimethylamino)-1-(4-((2-hydroxyethyl)(phenyl)amino)-2-(4-(oxazol-5-yl)phenylamino)-7,8-dihydropyrido[4,3-d]pyrimidin-6(5H)-yl)ethanoneYield 23.1%

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 (100 mg, 0.23 mmol, Example 1) was dissolved in methanol (0.5 mL) and dichloromethane (5 mL). Triethylamine (0.033 mL, 0.23 mmol) was added followed by dimethylaminoacetyl chloride hydrochloride (43.4 mg, 0.23 mmol). The reaction mixture was stirred at room temperature for 1 h and the solvent was evaporated under reduced pressure. The crude was dissolved in dimethylformamide filtered and purified by preparative HPLC yielding 2-(dimethylamino)-1-(4-((2-hydroxyethyl)(phenyl)amino)-2-(4-(oxazol-5-yl)phenylamino)-7,8-dihydropyrido[4,3-d]pyrimidin-6(5H)-yl)ethanone (27.3 mg, 20.39%).

Workup

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

Sources & evidence

ORD record
ord-c0e16bd125794b68b59fd14b3a5f8b97
Source dataset
uspto-grants-2012_05
Patent number
US08188101B2

Reaction notes

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