Cesium carbonate → ethyl {(1S)-5-[3-(4-cyano-2-propylphenoxy)propoxy]-2,3-dihydro-1H-inden-1-yl}acetate

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Reaction Conditions

Reaction Steps

To a mixture of 4-hydroxy-3-propylbenzonitrile (Example 29, 0.5 g, 3.1 mmol), ethyl [(1S)-5-(3-bromopropoxy)-2,3-dihydro-1H-inden-1-yl]acetate (Example 45, 1.1 g, 3.1 mmol) and Cs2CO3 (1.2 g, 3.7 mmol) in DMF (10 mL) was added water (6 drops). The reaction mixture was stirred at 40° C. for 16 h and then concentrated under reduced pressure. The residue was taken up in water and extracted with EtOAc (2×). The combined organic phases were dried over MgSO4, filtered, and concentrated under reduced pressure. Purification by silica gel flash chromatography (EtOAc/Hexane (v/v)=1:20) gave 0.86 g (66%) of the title compound as a light yellow oil. LC-MS: RT=4.12 min; (M+H)+ 422.0.

Provenance & Evidence