Water → Methanesulfonic acid 3-pyridin-4-yl-[1,2,4]oxadiazol-5-ylmethyl ester

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Reaction Steps

Methanesulfonyl chloride (0.50 ml, 6.50 mmol) was added to a stirred solution of (3-pyridin-4-yl-[1,2,4]oxadiazol-5-yl)methanol (1 g, 5.65 mmol) and triethylamine (0.953 ml, 6.78 mmol) in CH2Cl2 (30 ml) at 0° C. After 10 min, water (20 ml) was added and the aqueous phase extracted with CH2Cl2 (20 ml). The combined organic phases were dried (MgSO4) and evaporated to afford the title compound: RT=2.32 min; m/z (ES+)=256.0 [M+H]+.

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