Benzyl mercaptan → HCID 118094088, compound

Participants

Reaction Steps

Benzyl mercaptan (6 mL, 50.5 mmol) was added dropwise to a mixture of 5,7-dichloroquinoline (10 g, 50.5 mmol), cesium carbonate (20 g, 60 mmol) and DMF (50 mL) at 0° C. The reaction mixture was allowed to warm to room temperature, stirred for 2 hours and partitioned between ethyl acetate and water. The organic phase was washed with brine, dried with sodium sulfate and concentrated. Purification by column chromatography gave the 5-(benzylthio)-7-chloroquinoline (rf=0.5 in 2:1 hexanes/ethyl acetate) as a crystalline yellow solid. The undesired regioisomer elutes afterwards (rf=0.4 in 2:1 hexanes/ethyl acetate). The reaction is mildly selective for the desired isomer.

Provenance & Evidence