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 a 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 he 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