Cesium carbonate → Ethyl 6-(6-(3-ethylureido)pyridin-3-yl)-1-(2-methoxyethyl)-4-oxo-1,4-dihydroquinoline-3-carboxylate

HRID 2243023Notes

Reaction equation

[CH2:1]([NH:3][C:4]([NH:6][C:7]1[CH:12]=[CH:11][C:10](B2OC(C)(C)C(C)(C)O2)=[CH:9][N:8]=1)=[O:5])[CH3:2].I[C:23]1[CH:24]=[C:25]2[C:30](=[CH:31][CH:32]=1)[N:29]([CH2:33][CH2:34][O:35][CH3:36])[CH:28]=[C:27]([C:37]([O:39][CH2:40][CH3:41])=[O:38])[C:26]2=[O:42].C(=O)([O-])[O-].[Cs+].[Cs+]>O1CCOCC1.O.[Pd].C1(P(C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>[CH2:1]([NH:3][C:4](=[O:5])[NH:6][C:7]1[N:8]=[CH:9][C:10]([C:23]2[CH:24]=[C:25]3[C:30](=[CH:31][CH:32]=2)[N:29]([CH2:33][CH2:34][O:35][CH3:36])[CH:28]=[C:27]([C:37]([O:39][CH2:40][CH3:41])=[O:38])[C:26]3=[O:42])=[CH:11][CH:12]=1)[CH3:2]

Participants

Conditions

Temperature: 110 °C

Procedure

A mixture of N-ethyl-N′-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)urea (Intermediate 1, 80 mg, 0.27 mmol), ethyl 6-iodo-1-(2-methoxyethyl)-4-oxo-1,4-dihydroquinoline-3-carboxylate (WO2006010733, 100 mg, 0.25 mmol), cesium carbonate (90 mg, 0.27 mmol), and Tetrakisphenylphosphine palladium (28.9 mg, 0.02 mmol) in dioxane (4 mL) and water (1 mL) was degassed with nitrogen for 30 minutes. The reaction mixture was then heated in a microwave for 1 h at 110° C. The reaction mixture was cooled to room temperature and filtered, then placed on high vacuum to remove residual solvent (59 mg). MS (ESP): 439 (M+H+) for C23H26N4O5; NMR: 9.34 (s, 1H), 8.61 (m, 2H), 8.45 (m, 1H), 8.10 (m, 1H), 8.09 (m, 2H), 7.54 (m, 1H), 4.62 (m, 2H), 4.25 (m, 2H), 3.71 (m, 2H), 3.57 (s, 3H), 3.21 (m, 2H), 1.30 (t, J=7 Hz, 3H), 1.11 (t, J=8 Hz, 3H).

Workup

customwas degassed with nitrogen for 30 minutes
temperatureThe reaction mixture was cooled to room temperature
filtrationfiltered
customto remove residual solvent (59 mg)

Sources & evidence

ORD record: ord-0b121e4ab7dd415d82270f905ac0474e
Source dataset: uspto-grants-2010_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07674801B2

Reaction notes

Loading…