反应详情

(6-Methyl-5-nitropyridin-2-yl)methanol (12 g, 71 mmol), and triethylamine (9.4 g, 93 mmol) in THF (300 mL) was chilled in an ice bath to 10° C. and methanesulfonyl chloride (9.0 g, 79 mmol) was added dropwise and the solution was stirred for one hour, then filtered to remove triethylamine HCl, and the solvent was removed under reduced pressure on the rotovap (with the bath temperature at 35° C.) and (6-methyl-5-nitropyridin-2-yl)methyl methanesulfonate (17 g, 97%), a brown oil which was directly used as such. 1HNMR (CDCl3, 400 MHz) δ 2.87 (s, 3H), 3.16 (s, 3H), 5.83 (s, 2H), 7.55 (d, J=8.34, 1H), 8.38 (d, J=8.34, 1H); Exact mass calculated for C8H10N2O5: 246.03. found: 247.10 MS m/z (MH+).

1. filtrationfiltered
2. customto remove triethylamine HCl
3. customthe solvent was removed under reduced pressure on the rotovap (with the bath temperature at 35° C.) and (6-methyl-5-nitropyridin-2-yl)methyl methanesulfonate (17 g, 97%)