Lithium Hydroxide → (3R)-3-[(2-chloro-benzoyl)amino]-2,3-dihydro-1H-indene-5-carboxylic acid

Participants

Reaction Conditions

Reaction Steps

Method 1 LiOH (5 eq) was added to a suspension of (3R)-3-[(2-chloro-benzoyl)amino]-2,3-dihydro-1H-indene-5-carboxylic acid methyl ester (B-01) (8.569 mmol, 1 eq) in methanol (35 ml) and water (8 ml), and the reaction mixture was stirred overnight at 25° C. Methanol was removed in vacuo and the residue was taken up in diethyl ether and water. The phases were separated and the aqueous phase was adjusted to pH 2 with 1N HCl. The aqueous phase was extracted with ethyl acetate (2×) and the combined organic phases were then dried over magnesium sulfate. After concentration, the desired product (3R)-3-[(2-chloro-benzoyl)amino]-2,3-dihydro-1H-indene-5-carboxylic acid (E-01) was obtained. Yield: 93%

Provenance & Evidence