Methyl 4-(Chlorosulfonyl)benzoate → HCID 58975223, compound

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Reaction Steps

Add potassium tertbutoxide (368 mg, 3.28 mmol, 1.1 eq) to a 3 ml dioxane solution of 3-(3,3-difluoro-cyclopentyl)-1H-indole (660 mg, 2.98 mmol, 1.0 eq) under N2. Stir solution for 5 minutes. Add 4-Chlorosulfonyl-benzoic acid methyl ester 117 mg, 0.497 mmol, 1.1 eq). Stir reaction for 4 hours at room temperature. Strip reaction of solvent and purify by silica gel chromatography to give 4-[3-(3,3-Difluoro-cyclopentyl)-indole-1-sulfonyl]-benzoic acid methyl ester (466 mg, 37% yield).

Provenance & Evidence