Ethyl trimethylsilylacetate → HCID 21941242, compound

Participants

Reaction Conditions

Reaction Steps

5-Bromo-2-(2-methylpropyl)indazole (1.41 g, 0.0056 mol) and palladium acetate (0.063 g, 0.00028 mol) were stirred in toluene (10 ml) under an atmosphere of nitrogen. Ethyl trimethylsilylacetate (2.35 ml, 0.0115 mol), potassium tert-butoxide (0.66 g, 0.059 mol) and a 10% w/v solution of tri-tert-butylphosphine in toluene (0.97 ml, 0.00048 mol) were added sequentially and then the mixture was heated to 90° C. for 105 minutes. The mixture was cooled to room temperature, diluted with diethyl ether and filtered through diatomaceous earth and the filtrate was evaporated in vacuo. The residue was purified by flash column chromatography on silica gel eluting with 2:1 diethyl ether:hexane to give ethyl[2-(2-methylpropyl)indazol-5-yl]acetate (1.85 g), as a yellow oil.

Provenance & Evidence