反应详情

温度

0 °C

A solution of 3-(benzyloxy)-5-chloropyridine (4.00 g, 18.2 mmol) in dichloromethane (30.0 mL) was cooled to 0° C. under argon. O-(mesitylsulfonyl)hydroxylamine (5.23 g, 10% water, 21.9 mmol, prepared using a procedure similar to that reported in Org. Proc. Res. Dev. 2009, 13, 263-267) was added slowly and the mixture stirred at 0° C. for 1 h. 100 mL of ether was added, stirred for 5 minutes and filtered. The solids were washed with cold ether and dried on the frit to afford 1-amino-3-(benzyloxy)-5-chloropyridin-1-ium 2,4,6-trimethylbenzenesulfonate.

1. addition2009, 13, 263-267) was added slowly
2. stirringstirred for 5 minutes
3. filtrationfiltered
4. washThe solids were washed with cold ether
5. customdried on the frit