(Methoxycarbonylsulfamoyl)triethylammonium hydroxide → Ethyl 4-[(7,8-dihydro-8,8-dimethylnaphth-2-yl)ethynyl]benzoate

Participants

Reaction Conditions

Reaction Steps

To a solution of 0.13 g (0.38 mmol) of ethyl 4-[(5,6,7,8-tetrahydro-5-hydroxy-8,8-dimethylnaphth-2-yl)ethynyl]benzoate (Compound 9) in 15 ml of dry benzene was added 0.67 g (2.90 mmol) of (methoxy-carbonylsulfamoyl) triethylammonium hydroxide (Burgess Reagent). The resulting mixture was heated at 50° C. for 30 minutes, cooled to room temperature, partitioned between water (10 ml) and EtOAc (20 ml) and the layers separated. The organic layer was dried over Na2SO4, concentrated in vacuo and purified by flash chromatography (silica, 10% EtOAc-hexane) to yield the title compound as a clear oil.

Provenance & Evidence