Lawesson's reagent → Ethyl 6'-bromo-1'-(1,1-dimethylethylsulfinamido)-4-methoxy-1',3'-dihydrospiro[cyclohexane-1,2'-indene]-1'-carboxylate

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Reaction Steps

A 8 mL vial was charged with compound 5 (130 mg, 0.316 mmol) and Lawesson's reagent (138 mg, 0.342 mmol). Toluene (2 mL) was added, and the vial was sealed and placed into CEM microwave reactor and irradiated at 140° C. for 1 h. After cooling down, the solvent was removed by evaporation in vacuo and the resulting residue was purified by column chromatography over silica gel (petroleum ether: EtOAc, 50:1 to 10:1) to give compound 6 (35 mg, 25%) as a whit solid. LC-MS tR=1.244 min in 2 min chromatography, MS (ESI) m/z=435.2 [M+H]+.

Provenance & Evidence