Water → HCID 68427754, compound

Participants

Reaction Steps

To a solution of [4-(3-cyano-1-cyclobutyl-6-hydroxy-1H-indol-2-yl)-phenyl]-carbamic acid isopropyl ester (100 mg, 0.26 mmol) in DMF (3 mL) is added K2CO3 (43.2 mg, 0.312 mmole) and 4-nitrobenzenesulfonic acid 2-(2,2-dimethyl-[1,3]dioxolan-4-yl)-ethyl ester (129 mg, 0.39 mmole) and the reaction is stirred for 18 h at ambient temperature. The reaction mixture is then poured into cold water and the precipitate is collected by filtration and washed with EtOAc/hexane and dried in vacuo to afford 96 mg, 84% of the desired product, (4-{3-cyano-1-cyclobutyl-6-[2-(2,2-dimethyl-[1,3]dioxolan-4-yl)-ethoxy]-1H-indol-2-yl}carbamic acid isopropyl ester, compound 1428.

Provenance & Evidence