反应详情

温度

0 °C

To (3R/S,3aR/S,5S/R,6S/R,6aS/R,7S/R)-6-iodo-2-oxohexahydro-2H-3,5-methano-cyclopenta[b]furan-7-carboxylic acid (1.51 g, 4.90 mmol) was added aminoacetonitrile hydrochloride (502 mg, 5.43 mmol) and) benzotriazol-1-yloxy)tripyrrolidinophosphonium hexafluorophosphate (2.56 g, 4.91 mmol. After adding dimethylformamide (10 mL), the reaction mixture was cooled to 0° C. and triethylamine (1.7 mL, 12 mmol) was added. After stirring the reaction mixture at ambient temperature for 4.5 h, the product was extracted into ethyl acetate. The combined organic phases were washed with saturated sodium chloride aqueous solution, dried over anhydrous sodium sulfate, and concentrated. Chromatography of the residue on silica gel with 1:1 ethyl acetate:hexanes eluent gave (3R/S,3aR/S,5S/R,6S/R,6aS/R,7S/R)-N-(cyanomethyl)-6-iodo-2-oxohexahydro-2H-3,5-methanocyclopenta[b]furan-7-carboxamide as a colorless syrup.

1. extractionthe product was extracted into ethyl acetate
2. washThe combined organic phases were washed with saturated sodium chloride aqueous solution
3. dry with materialdried over anhydrous sodium sulfate
4. concentrationconcentrated