[N:1]1([CH2:7][CH:8]2[O:12][N:11]=[C:10]([CH2:13][OH:14])[CH2:9]2)[CH2:6][CH2:5][O:4][CH2:3][CH2:2]1.C(N(C(C)C)CC)(C)C.[CH3:24][S:25](Cl)(=[O:27])=[O:26].O>ClCCl>[CH3:24][S:25]([O:14][CH2:13][C:10]1[CH2:9][CH:8]([CH2:7][N:1]2[CH2:6][CH2:5][O:4][CH2:3][CH2:2]2)[O:12][N:11]=1)(=[O:27])=[O:26]To a solution of [5-(morpholin-4-ylmethyl)-4,5-dihydro-isoxazol-3-yl]methanol (0.38 g) in dichloromethane was added dropwise diisopropylethylamine (0.33 mL) and methanesulfonyl chloride (0.15 mL). The resulting solution was stirred at room temperature for 3 h and treated with water. The layers were separated and the organic layer was dried (Na2SO4) en concentrated in vacuo to afford [5-((morpholin-4-yl)methyl)-4,5-dihydro-isoxazol-3-yl]methanol methanesulfonate, 0.52 g (˜100%). Rf 0.63 (CH2Cl2/MeOH/NH4OH 92/7.5/0.5).
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