Triethylamine → t-Butyl 2-[({2-(2,3-dihydro-1H-indol-1-yl)-4-[(4-fluorobenzyl)oxy]-5-pyrimidinyl}carbonyl)amino]acetate

HRID 7434

Reaction equation

HRID 7434 reaction equation
[N:1]1([C:10]2[N:15]=[C:14]([O:16][CH2:17][C:18]3[CH:23]=[CH:22][C:21]([F:24])=[CH:20][CH:19]=3)[C:13]([C:25]([OH:27])=O)=[CH:12][N:11]=2)[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[CH2:3][CH2:2]1.C([NH:32][CH2:33][C:34]([OH:36])=[O:35])(C)(C)C.Cl.C(N=C=N[CH2:43][CH2:44][CH2:45]N(C)C)C.[CH2:49](N(CC)CC)C>ClCCl.C(OCC)(=O)C.O>[N:1]1([C:10]2[N:15]=[C:14]([O:16][CH2:17][C:18]3[CH:23]=[CH:22][C:21]([F:24])=[CH:20][CH:19]=3)[C:13]([C:25]([NH:32][CH2:33][C:34]([O:36][C:44]([CH3:45])([CH3:49])[CH3:43])=[O:35])=[O:27])=[CH:12][N:11]=2)[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[CH2:3][CH2:2]1

Participants

8

Reactant 4

HCID 8471TriethylamineHCID 414246N-tert-ButylglycineHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 219904812-(2,3-dihydro-1H-indol-1-yl)-4-[(4-fluorobenzyl)oxy]-5-pyrimidinecarboxylic acid

Product 1

HCID 9912947t-Butyl 2-[({2-(2,3-dihydro-1H-indol-1-yl)-4-[(4-fluorobenzyl)oxy]-5-pyrimidinyl}carbonyl)amino]acetateYield 88%

Reagents, catalysts & solvents 3

HCID 962WaterSolventHCID 6344DichloromethaneSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a suspension of ethyl 2-(2,3-dihydro-1H-indol-1-yl)-4-[(4-fluorobenzyl)oxy]-5-pyrimidinecarboxylate (5.0 g, 13 mmol) in ethanol (25 mL) were added 10% aqueous sodium hydroxide solution (15 mL) and tetrahydrofuran (15 mL) and the mixture was heated under reflux for 30 min. The reaction mixture was allowed to cool to room temperature and 1N hydrochloric acid was added to adjust the reaction mixture to pH 5. The precipitated crystals were collected by filtration, washed several times with water, dried with heating under vacuum to give 2-(2,3-dihydro-1H-indol-1-yl)-4-[(4-fluorobenzyl)oxy]-5-pyrimidinecarboxylic acid (4.8 g, 100%) as crystals. To the obtained suspension of the obtained carboxylic acid (183 mg, 0.5 mmol), t-butyl glycine (89 mg, 0.53 mmol) and 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (102 mg, 0.53 mmol) in dichloromethane (2 mL) was added triethylamine (0.21 mL, 1.5 mmol) and the mixture was stirred at room temperature for 18 h. Water and ethyl acetate were added to the reaction mixture and the organic layer was concentrated under reduced pressure. The obtained residue was subjected to silica gel chromatography and eluted with ethyl acetate to give the title compound (210 mg, 88%).

Workup

  1. concentrationthe organic layer was concentrated under reduced pressure
  2. washeluted with ethyl acetate

Sources & evidence

ORD record
ord-a86ffa6c30744c3a9d4d59f0fa7c72b0
Source dataset
uspto-grants-2006_08
Patent number
US07087597B1

Linked notes

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