反应详情

Methyl 4-cyano-3-hydroxybenzoate, as described in Example 4, Step C, (0.50 g, 2.82 mmol) was dissolved in dry THF (30 mL), treated with LiBH4 (2.0M solution in THF) (5.64 mL, 11.28 mmol) and heated at reflux overnight. The reaction mixture was concentrated, then partitioned between EtOAc (50 mL) and 1N HCl (50 mL). Next, the aqueous layer was extracted with additional EtOAc (2×50 mL), the organic layers were combined, washed with brine, and dried (MgSO4). The title compounds was obtained by filtering and concentrating to dryness.

1. temperatureheated
2. temperatureat reflux overnight
3. concentrationThe reaction mixture was concentrated
4. custompartitioned between EtOAc (50 mL) and 1N HCl (50 mL)
5. extractionNext, the aqueous layer was extracted with additional EtOAc (2×50 mL)
6. washwashed with brine
7. dry with materialdried (MgSO4)