反应详情

To a solution of acetic acid 6-acetoxy-2,2-dimethyl-tetrahydro-furo[3,4-d][1,3]dioxol-4-ylmethyl ester (623 mg, 2.27 mmol) in dichloromethane (3 mL) was added iodotrimethylsilane (0.35 mL, 2.49 mmol) at −78° C. and the reaction mixture brought to RT. After confirming the disappearance of starting material by TLC, triisopropylphosphite (1.18 mL, 5.68 mmol) was added at −78° C. The reaction mixture was left to warm to RT and stirred overnight. The reaction was quenched with sodium bicarbonate, extracted with dichoromethane, the organic layers concentrated, dried and chromatographed. Elution with 50% ethylacetate/hexanes gave acetic acid 6-(diisopropoxy-phosphoryl)-2,2-dimethyl-tetrahydro-furo[3,4-d][1,3]dioxol-4-ylmethyl ester as a colorless syrup (467 mg, 54%).

1. custombrought to RT
2. additionwas added at −78° C
3. waitThe reaction mixture was left
4. customThe reaction was quenched with sodium bicarbonate
5. extractionextracted with dichoromethane
6. concentrationthe organic layers concentrated
7. customdried
8. customchromatographed
9. washElution with 50% ethylacetate/hexanes