Water → HCID 22731986, compound

Participants

Reaction Steps

LiOH.H2O (0.15 g; 3.6 mmol) and water (2 mL) were added to a solution of 6,8-dichloro-4-hydroxychroman-4-yl-carboxylic acid, methyl ester (0.50 g; 1.8 mmol; from step (i) above) in THF (5 mL). The resultant mixture was stirred at room temperature for 30 min., THF was evaporated and the water phase was washed with methylene chloride. The reaction mixture was made acidic with HCl (2M) and extracted with methylene chloride. The organic layer was dried (Na2SO4) and evaporated, yielding the sub-title compound. Yield: 390 mg (83%).

Provenance & Evidence