Cesium carbonate → US10023592, Example 288

HRID 575768Notes

Reaction equation

[CH:1]1([CH2:4][O:5][C:6]2[CH:11]=[CH:10][C:9]([S:12]([CH2:15][CH3:16])(=[O:14])=[O:13])=[CH:8][C:7]=2[C:17]2[CH:18]=[C:19]([OH:25])[C:20](=[O:24])[N:21]([CH3:23])[CH:22]=2)[CH2:3][CH2:2]1.FC(F)(F)S(O[CH2:32][C:33]([F:36])([F:35])[F:34])(=O)=O.C([O-])([O-])=O.[Cs+].[Cs+]>CN(C=O)C>[CH:1]1([CH2:4][O:5][C:6]2[CH:11]=[CH:10][C:9]([S:12]([CH2:15][CH3:16])(=[O:14])=[O:13])=[CH:8][C:7]=2[C:17]2[CH:18]=[C:19]([O:25][CH2:32][C:33]([F:36])([F:35])[F:34])[C:20](=[O:24])[N:21]([CH3:23])[CH:22]=2)[CH2:3][CH2:2]1

Participants

Conditions

Temperature: 20 °C

Procedure

A mixture of 5-[2-(cyclopropylmethoxy)-5-ethylsulfonylphenyl]-3-hydroxy-1-methylpyridin-2-one (50 mg, 0.14 mmol), 2,2,2-trifluoroethyl trifluoromethanesulfonate (33 mg, 0.14 mmol), Cs2CO3 (134.48 mg, 0.42 mmol) in DMF (2 mL) was stirred at 20° C. for 2 h After the mixture was filtered, the filtrate was concentrated in vacuo. The residue was purified by prep-HPLC to give the title compound (29 mg, 47%) as an off-white solid. 1H NMR (CDCl3, 400 MHz) δ 7.84 (m, 1H), 7.77 (m, 1H), 7.41 (m, 2H), 7.04 (m, 1H), 4.58 (m, 2H), 3.95 (m, 2H), 3.70 (s, 3H), 3.14 (m, 2H), 1.33-1.27 (m, 4H), 0.72-0.69 (m, 2H), 0.39-0.35 (m, 2H). LCMS (M+H)+=446.

Workup

filtrationwas filtered
concentrationthe filtrate was concentrated in vacuo
customThe residue was purified by prep-HPLC

Sources & evidence

ORD record: ord-069a4100574a48b69b32728823280b8a
Source dataset: uspto-grants-2015_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09034900B2

Reaction notes

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