Water → HCID 22708345, compound

Participants

Reaction Steps

LiOH.H2O (0.19 g; 4.6 mmol) and water (4 mL) were added to a solution of 6-chloro-4-hydroxychroman-4-yl-carboxylic acid, methyl ester (0.56 g, 2.3 mmol; from step (i) above) in THF (6 mL). The reaction mixture was stirred at room temperature for 3 h, THF was evaporated and the water solution was washed with methylene chloride. The reaction mixture was acidified with HCl (2M) and extracted with ethyl acetate. The organic layer was dried (Na2SO4) and evaporated, yielding a slowly crystallizing oil. Yield: 490 mg (93%).

Provenance & Evidence