Cesium carbonate → HCID 59730078, compound

HRID 228362Notes

Reaction equation

[C:1]([O:5][C:6](=[O:18])[N:7]([CH2:9][CH2:10][C:11]1[CH:16]=[CH:15][C:14]([OH:17])=[CH:13][CH:12]=1)[CH3:8])([CH3:4])([CH3:3])[CH3:2].Cl[C:20]1[CH:28]=[CH:27][C:23]([C:24]([NH2:26])=[O:25])=[CH:22][N:21]=1.C(=O)([O-])[O-].[Cs+].[Cs+]>CN(C)C=O>[C:1]([O:5][C:6](=[O:18])[N:7]([CH2:9][CH2:10][C:11]1[CH:12]=[CH:13][C:14]([O:17][C:20]2[CH:28]=[CH:27][C:23]([C:24](=[O:25])[NH2:26])=[CH:22][N:21]=2)=[CH:15][CH:16]=1)[CH3:8])([CH3:4])([CH3:2])[CH3:3]

Participants

Conditions

Temperature: 85 °C

Procedure

Combine [2-(4-hydroxy-phenyl)-ethyl]-methyl-carbamic acid tert-butyl ester (5.0 g, 19.9 mmol), 6-chloronicotinamide (3.1 g, 19.9 mmol), and cesium carbonate (12.9 g, 39.8 mmol), in N,N-dimethylformamide (90 mL), stir and heat at 85° C. for 18 hours. Cool to room temperature and evaporate on a rotary evaporator to yield the crude product (9.5 g). The crude product is purified by flash column chromatography on silica gel eluting with (0.5% conc. ammonium hydroxide/5% ethanol) to (1% conc. ammonium hydroxide/10% ethanol) in chloroform to yield {2-[4-(5-carbamoyl-pyridin-2-yloxy)-phenyl]-ethyl}-methyl-carbamic acid tert-butyl ester (6.5 g, 17.5 mmol): 1H NMR (CDCl3, 300.00 MHz): 8.60 (s, 1H); 8.18-8.14 (m, 1H); 7.24-7.24 (m, 2H); 7.07 (d, 2H); 6.94 (d, 1H); 5.98 (br, 2H); 3.47-3.42 (m, 2H); 2.85-2.85 (m, 5H); 1.42 (s, 9H).

Workup

temperatureCool to room temperature
customevaporate on a rotary evaporator
customto yield the crude product (9.5 g)
customThe crude product is purified by flash column chromatography on silica gel eluting with (0.5% conc. ammonium hydroxide/5% ethanol) to (1% conc. ammonium hydroxide/10% ethanol) in chloroform

Sources & evidence

ORD record: ord-f460cf7c43a94ca8929a3f1dadc0f7f0
Source dataset: uspto-grants-2009_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07560463B2

Reaction notes

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