Nitrogen → Methanesulfonic acid 4-(2-methyl-[1,3]dioxolan-2-yl)-pyridin-2-ylmethyl ester

関与物質

反応手順

In a flame dried round-bottomed flask equipped with a magnetic stir bar and under inert atmosphere (N2), a solution of [4-(2-methyl-[1,3]dioxolan-2-yl)-pyridin-2-yl]-methanol (950 mg, 4.87 mmol) in dry CH2Cl2 (5 mL) was treated at 0° C. with Et3N (0.88 mL, 6.29 mmol) followed by DMAP (60 mg, 0.49 mmol) and Ms-Cl (0.49 mL, 6.15 mmol). After stirring at rt for 2 h, the reaction was quenched with water (5 mL). The org. layer was dried over MgSO4, filtered, and the solvent was removed under reduced pressure. Purification of the residue by FC (5:1 to 2:1 hept-EA) gave the title compound as a yellow oil. LC-MS-conditions 02: tR=0.76 min, [M+H]+=274.30.

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