Hydrochloric Acid → HCID 10637623, compound

Participants

Reaction Steps

5-Hydroxy-2-methyl-1-(phenylmethyl)-1H-indole-3-acetic acid methyl ester. Three mL (30 mmol) of BBr3 was added to 3.1 g (10 mmol) of 5-methoxy-2-methyl-1-(phenylmethyl)-1H-indole-3-acetic acid in 250 mL of CH2Cl2 and the mixture stirred for 17 hours. After stirring with 1N HCl, some EtOH was added, the organic layer separated, washed with saturated NaCl solution, dried and concentrated at reduced pressure to give 2.95 g(100% yield) of crude 5-hydroxy-2-methyl-1-(phenylmethyl)-1H-indole-3-acetic acid. A methanol solution of 1.7 g of the material was treated with sulfuric acid as described in Part A to give after silica gel chromatography (30% ether/hexane→60% ether/hexane) 1.5 g of 5-hydroxy-2-methyl-1-(phenylmethyl)-1H-indole-3-acetic acid methyl ester.

Provenance & Evidence