Triethylamine → 1-{4-[6-(4-Methanesulfonyl-phenylamino)-5-nitro-pyrimidin-4-yloxy]-piperidin-1-yl}-3,3-dimethyl-butan-2-one

HRID 1036749Notes

Reaction equation

[CH3:1][S:2]([C:5]1[CH:10]=[CH:9][C:8]([NH:11][C:12]2[C:17]([N+:18]([O-:20])=[O:19])=[C:16]([O:21][CH:22]3[CH2:27][CH2:26][NH:25][CH2:24][CH2:23]3)[N:15]=[CH:14][N:13]=2)=[CH:7][CH:6]=1)(=[O:4])=[O:3].Br[CH2:29][C:30](=[O:35])[C:31]([CH3:34])([CH3:33])[CH3:32].C(N(CC)CC)C>CN(C=O)C>[CH3:1][S:2]([C:5]1[CH:10]=[CH:9][C:8]([NH:11][C:12]2[N:13]=[CH:14][N:15]=[C:16]([O:21][CH:22]3[CH2:27][CH2:26][N:25]([CH2:29][C:30](=[O:35])[C:31]([CH3:34])([CH3:33])[CH3:32])[CH2:24][CH2:23]3)[C:17]=2[N+:18]([O-:20])=[O:19])=[CH:7][CH:6]=1)(=[O:4])=[O:3]

Participants

Conditions

Temperature: 80 °C

Procedure

Compound A2 (0.12 mmol, 50 mg), and 1-bromo-3,3-dimethyl-butan-2-one (0.12 mmol, 16 μL) were dissolved in DMF (1 mL) and triethylamine (0.36 mmol, 50 μL). The reaction was heated in a microwave at 80° C. for 4 minutes. The mixture was quenched with water and extracted with ethyl acetate. Removal of organic solvent in vacuo and purification by HPLC provided Compound A11 as a yellow solid (15 mg, 25%). 1H NMR (400 MHz, CDCl3) δ (ppm): 10.11 (s, 1H), 8.32 (s, 1H), 7.89 (d, 2H), 7.78 (d, 2H), 5.49 (s broad, 1H), 3.53 (s broad, 2H), 3.01 (s, 3H), 2.78 (m, 4H), 2.18 (m, 2H), 1.96 (m, 2H), 1.20 (s, 9H). LCMS (ESI), m/z 492.3 (M+H+, 100%).

Workup

customThe mixture was quenched with water
extractionextracted with ethyl acetate
customRemoval of organic solvent
customin vacuo and purification by HPLC

Sources & evidence

ORD record: ord-79829eefdb184117bbaf60cd02fb0682
Source dataset: uspto-grants-2013_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08546429B2

Reaction notes

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