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To a mixture of 2-(5-hydroxymethyl-isoxazol-3-yl)-pyridine (4.0 gm), and triethylamine (6.5 ml) in dichloromethane (40 ml) was added methanesulfonyl chloride (2.8 ml) at 0° C. The reaction mixture was stirred at 0° C. over a period of 1 h. The reaction was quenched by addition of water and layers were separated. Aqueous layer was extracted with dichloromethane (40 ml×2). Combined organic layer was washed with aqueous sodium bicarbonate solution followed by water and evaporated under vacuum to provide the title compound in 5.1 gm quantity (84%) as a semisolid, which was used without purification for the next reaction.

1. customThe reaction was quenched by addition of water and layers
2. customwere separated
3. extractionAqueous layer was extracted with dichloromethane (40 ml×2)
4. washCombined organic layer was washed with aqueous sodium bicarbonate solution
5. customevaporated under vacuum