Methanesulfonyl chloride → (E)-N-(2-methoxy-5-((2,4,6-trimethoxystyrylsulfonyl)methyl)pyridin-3-yl)methanesulfonamide

Participants

Reaction Steps

Methanesulfonyl chloride (0.048 mL, 0.31 mmol) was added dropwise into the solution of (E)-2-methoxy-5-((2,4,6-trimethoxystyrylsulfonyl)methyl)pyridin-3-amine (111 mg, 0.28 mmol) in dry pyridine (7 mL) on an ice bath. After warming up to room temperature the mixture was stirred overnight. After evaporated to dryness, the residue was purified by silica gel chromatography, eluting with PE/EtOAc (1:2 v/v) to afford pure product as a white solid (42 mg, 32%) 1H-NMR (Acetone-do): δ 2.98 (s, 3H, CH3), 3.90 (s, 3H, OCH3), 3.93 (s, 6H, 2×OCH3), 3.97 (s, 3H, OCH3), 4.38 (s, 2H, CH2), 6.31 (s, 2H, Ph-H), 7.19 (d, 1H, J=15.6 Hz, CH), 7.71 (d, 1H, J=15.6 Hz, CH), 7.85 (d, 1H, J=2.0 Hz, Py-H), 7.97 (d, 1H, J=2.0 Hz, Py-H); 13C-NMR (Acetone-d6): δ 38.78, 53.30, 55.08, 55.53, 57.36, 90.67, 103.24, 119.44, 121.70, 123.17, 130.21, 134.70, 143.67, 154.11, 161.54, 164.28; HR-MS (ESI+) m/z 473.1115 [M+H]+ C19H24N2O832 requires 472.0974.

Provenance & Evidence