Dimethylformamide → Methyl 2-methyl-3-nitrobenzoate

HRID 1884556Notes

Reaction equation

CN([CH:4]=[O:5])C.[CH3:6][C:7]1[C:15]([N+:16]([O-:18])=[O:17])=[CH:14][CH:13]=[CH:12][C:8]=1[C:9](O)=[O:10].IC>O>[CH3:6][C:7]1[C:15]([N+:16]([O-:18])=[O:17])=[CH:14][CH:13]=[CH:12][C:8]=1[C:9]([O:5][CH3:4])=[O:10]

Participants

Conditions

Temperature: 40 °C

Procedure

With reference to FIG. 4, DMF (130 mL) was added to a well mixed 2-methyl-3-nitrobenzoic acid 2 (50 g, 0.28 mol) and KHCO3 (84 g, 0.84 mol) solution. Since the mixture became highly viscous, it was heated to 40° C. with manual shaking. Iodomethane (79 g, 0.56 mol) was added via syringe after the gas evolution had ceased. The resulting orange colored solution was stirred for 12 hours at room temperature. The reaction mixture was poured into water (800 mL), and the resulting precipitate collected by filtration and dried over P2O5 to give pure methyl 2-methyl-3-nitrobenzoate 3 (56 g, 100%) as a white solid: mp. 64.2-65.5° C.; 1H-NMR (CDCl3) δ 8.00 (d, J=7.8 Hz, 1H), 7.85 (d, J=8.0 Hz, 1H), 7.39 (t, J=8.0 Hz, 1H), 3.95 (s, 3H), 2.63 (s, 3H); IR (KBr, cm−1) 1724, 1548, 1279; MS (EI): 195 (M+).

Workup

filtrationthe resulting precipitate collected by filtration
dry with materialdried over P2O5

Sources & evidence

ORD record: ord-9ad8c2540170435cb4754fd0c9ab5a2d
Source dataset: uspto-grants-2004_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06765099B2

Reaction notes

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