Sodium Hydroxide → 5-bromo-3-(1,1-dioxidotetrahydro-3-thienyl)-1H-indole-7-carboxylic acid

Participants

Reaction Conditions

Reaction Steps

Ethyl 5-bromo-3-(1,1-dioxidotetrahydro-3-thienyl)-1H-indole-7-carboxylate (0.596 g, 1.54 mmol) was dissolved in water (8.2 mL) and methanol (13.8 mL). A 6M NaOH solution (2.55 mL) was added and heated to 85° C. for 1.5 hours. The methanol was then concentrated and the solution was acidified with 6M HCl. The resulting white solid was filtered and dried to give 0.503 g (91%) of product.

Provenance & Evidence