Hydrochloric Acid → HCID 22627242, compound

Participants

Reaction Conditions

Reaction Steps

To a mixture of methyl 1-(2-chlorobenzyl)-3-formyl-2-propylindole-6-carboxylate (263 mg), 2-methyl-2-butene (220 mg) and sodium dihydrogenohosphate (128 mg) in a mixture of tert-butanol (7 ml) and water (1.3 ml) was added sodium chlorite (219 mg) at 20° C. The reaction mixture was stirred at 40° C. for 2 hours. The reaction mixture was acidified with 1N hydrochloric acid at 0° C. and extracted with chloroform three times. The organic phase was dried over sodium sulfate and evaporated in vacuo. The residue was chromatographed on silica gel eluting with a mixture of ethyl acetate and hexane (1:2) to give 1-(2-chlorobenzyl)-6-methoxycarbonyl-2-propylindole-3-carboxylic acid (94 mg) as pale yellow crystals.

Provenance & Evidence