N,O-Dimethylhydroxylamine → 2-(4-(5-bromopyrimidin-2-ylamino)phenyl)-N-methoxy-N-methylacetamide

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Reaction Steps

2-(4-(5-Bromopyrimidin-2-ylamino)phenyl)acetic acid 22 (5.0 mmol) and HATU (6.0 mmol) are dissolved in dry DMF (10 mL) and stirred for 10 min. Then N,O-dimethylhydroxylamine (7.5 mmol) and diisopropylethylamine (15.0 mmol) are added to the solution. The reaction mixture is stirred for 1 h at rt. After the reaction is complete, the reaction mixture is added dropwise into water (100 mL). The precipitate is filtered and dried to yield 2-(4-(5-bromopyrimidin-2-ylamino)phenyl)-N-methoxy-N-methylacetamide 23. 1H NMR (400 MHz, d6-DMSO) δ 9.82 (s, 1H), 8.58 (s, 2H), 7.61 (d, J=8.4 Hz, 2H), 7.15 (d, J=8.4 Hz, 2H), 3.67 (s, 3H), 3.34 (s, 2H), 3.10 (s, 3H). MS (m/z) (M+1)+: 351.0, 353.0.

Provenance & Evidence