Ethyl Acetate → HCID 69052429, compound

Participants

Reaction Steps

0.56 g of a 60% suspension of NaH in mineral oil were suspended in 20 ml of DME. Afterwards, 2.8 ml of (diethoxy-phosphoryl)-acetic acid ethyl ester were added dropwise at ambient temperature and the mixture stirred for 1 h at that temperature. A solution prepared of 3-hydroxy-5-methanesulfonyl-2-(2,2,2-trifluoro-ethyl)-2,3-dihydro-isoindol-1-one using 30 ml of DME was then added and the mixture was heated up to reflux. The mixture was refluxed for 4 h and then allowed to cool to ambient temperature. 300 ml of EA were added and the mixture was washed 3 times using 100 ml of saturated aqueous NaHCO3 solution each time. The aqueous layer was then extracted twice using 100 ml of EA each time. The combined EA layers were dried over Na2SO4 and the solvent was removed in vacuo. Chromatography on silica gel using MTB yielded 1.1 g of a colorless oil (Rf (MTB)=0.40; MS (DCI): 380 (M+1)+).

Provenance & Evidence