In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles, 2,3-Dimethylpyrazine, other downstream synthetic routes, hurry up and to see.
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A mixture of 2,3-dimethylpyrazine (2Og, 18.5mmol), selenium dioxide (41.06g, 37mmol) and diatomeous earth (2Og) in EtOAc (500ml) was stirred and heated at 7O0C for 2 hours. The mixture was allowed to cool and the insoluble matter was removed by filtration EPO through diatomeous earth. The filtrate was washed with saturated aqueous sodium hydrogen carbonate solution and then saturated aqueous sodium chloride solution, dried (MgSO4) and the solvent removed by evaporation. The residue was suspended in water (100ml) and hydroxylamine (45ml of a 50% aqueous solution) was added. The mixture was stirred at ambient temperature for 18 hours and the mixture then extracted with EtOAc. The extracts were combined, washed with saturated aqueous sodium chloride solution, dried (MgSO4) and the solvent removed by evaporation. The residue was triturated with isohexane to give 3- methylpyrazine-2-carboxaldehyde oxime (9.65g, 38%); NMR Spectrum 2.67 (s, 3H), 8.23 (s, IH), 8.45-8.49 (m, 2H), 11.87 (s, IH).
In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles, 2,3-Dimethylpyrazine, other downstream synthetic routes, hurry up and to see.