HCID 131729363, compound → HCID 131729362, compound

Participants

Reaction Steps

To a solution of N′-[4-[(3aR*,7S*,7aS*)-3-(3-tert-butyl-benzyl)-2,5,5-trioxo-octahydro-1-oxa-5lambda*6*-thia-3-aza-inden-7-ylmethyl]-2-fluoro-6-((S)-3,3,3-trifluoro-2-hydroxy-propyl)-phenyl]-N,N-dimethyl-formamidine (0.11 g, 0.17 mmol) in anhydrous EtOH (3 mL) was added ZnCl2 (0.12 g, 0.86 mmol) and the reaction mixture was heated at reflux for 8 h. The reaction mixture was diluted with EtOAc and aq. K2CO3 solution. The product was extracted with EtOAc and the combined organic layers were washed with brine, dried over MgSO4, filtered and evaporated. The crude product was purified by flash-chromatography on silica gel (hexane-EtOAc 2:1 to 1:2) to yield the title compound as a colorless foam: TLC (hexane-EtOAc 1:1) Rf=0.39; HPLC RtA=2.21 min; ESIMS [M+H]+=573.

Provenance & Evidence