反应详情

In a flame dried round-bottomed flask equipped with a magnetic stir bar and under inert atmosphere (N2), a solution of [5-(2-methyl-[1,3]dioxolan-2-yl)-thiophen-3-yl]-methanol (460 mg, 2.30 mmol) in dry CH2Cl2 (4.6 mL) was treated at 0° C. with Et3N (0.42 mL, 2.99 mmol) followed by DMAP (28 mg, 0.23 mmol) and Ms-Cl (0.21 mL, 2.76 mmol). After stirring at rt for 2 h, the reaction mixture was quenched with water (10 mL), extracted with CH2Cl2 (20 mL) and the combined org. extracts were dried over NaSO4, filtered, and the solvents were removed under reduced pressure. Purification of the residue by FC (4:1 hept-EA) gave the title compound as a pale yellow oil. TLC:rf (1:4 EA-Hept)=0.35.

1. customthe reaction mixture was quenched with water (10 mL)
2. extractionextracted with CH2Cl2 (20 mL)
3. dry with materialextracts were dried over NaSO4
4. filtrationfiltered
5. customthe solvents were removed under reduced pressure
6. customPurification of the residue by FC (4:1 hept-EA)