反应详情

A solution of 85% formic acid (0.63 mL) and triethylamine (2.32 mL, 16.7 mmol) in acetonitrile at 0° C. was treated with the product from Example 82A (1.3 g, 5.6 mmol), stirred at room temperature for 3 hours, the reaction evaporated to dryness, partitioned between ethyl acetate/water, the organic layer dried with sodium sulfate, filtered and solvent evaporated to provide a crude formate ester. This residue was dissolved in methanol:water (5:1), treated with a catalytic amount of concentrated hydrochloric acid, stirred at room temperature overnight, evaporated to dryness, and flash chromatographed over silica gel eluting with ethyl acetate:hexane (1:1) to provide 0.40 g 3-cyano-4-fluorobenzyl alcohol.

1. customthe reaction evaporated to dryness
2. custompartitioned between ethyl acetate/water
3. dry with materialthe organic layer dried with sodium sulfate
4. filtrationfiltered
5. customsolvent evaporated
6. customto provide a crude formate ester
7. stirringstirred at room temperature overnight
8. customevaporated to dryness, and flash
9. customchromatographed over silica gel eluting with ethyl acetate:hexane (1:1)