Ethylene carbonate → HCID 22036444, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 6-hydroxyindole (2.66 g, 20 mmol) and K2CO3 (3.04 g, 22 mmol) was stirred in DMF (10 mL) at 80° C. for 10 min. A solution of ethylene carbonate (1.94 g, 22 mmol) in DMF (4 mL) was added and the mixture was heated at 125° C. for 3 h. The mixture was concentrated, diluted with water, and extracted with toluene. The organic phase was washed with 1 M aqueous Na2CO3 and brine. The organic layer was dried (Na2SO4) and concentrated. The residue was purified by flash chromatography on silica using EtOAc/toluene (1:4→36:65) as eluent. Yield 1.02 g (29%); mp 74-77° C.; HRMS m/z calcd for C10H11NO2 (M)+ 177.0790, found 177.0784. Anal. (C10H11NO2) C, H, N.

Provenance & Evidence