[C:1]([C:5]1[CH:9]=[C:8]([CH2:10]O)[O:7][N:6]=1)([CH3:4])([CH3:3])[CH3:2].S(Cl)([Cl:14])=O>ClCCl>[C:1]([C:5]1[CH:9]=[C:8]([CH2:10][Cl:14])[O:7][N:6]=1)([CH3:4])([CH3:3])[CH3:2]1.12 g of (3-t-butyl-isoxazol-5-yl)methanol was dissolved in 35 ml of dichloromethane, and 2.4 ml of thionyl chloride was added. The mixture was stirred at room temperature overnight. The reaction mixture was concentrated under reduced pressure. The residue was washed with hexane to obtain 1.12 g of 3-t-butyl-5-(chloromethyl)-isoxazole.
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