反应详情

A mixture of methyl 3,3-bis(4-chlorophenyl)propionate (Step B, 0.78 g, 3.9 mmol), lithium hydroxide monohydrate (0.33 g, 7.8 mmol) in 1:1:1 MeOH/THF/water (15 mL) was stirred at room temperature overnight. The resulting mixture was partitioned between 2 M aqueous hydrochloric acid (50 mL) and ether (50 mL). The organic layer was separated and the aqueous layer extracted with EtOAc (2×50 mL). The combined extracts were dried over anhydrous MgSO4, filtered, and concentrated to dryness to give the title compound. 1H NMR (500 MHz, CD3OD): δ 7.29-7.23 (m, 4H), 4.49 (t, 1H), 3.02 (d, 2H).

1. customThe resulting mixture was partitioned between 2 M aqueous hydrochloric acid (50 mL) and ether (50 mL)
2. customThe organic layer was separated
3. extractionthe aqueous layer extracted with EtOAc (2×50 mL)
4. dry with materialThe combined extracts were dried over anhydrous MgSO4
5. filtrationfiltered
6. concentrationconcentrated to dryness