Sodium hydride → 1-[4-Benzyloxy-2-((R)-1-oxiranylmethoxy)phenyl]ethanone

関与物質

反応手順

To a stirred solution of 1-(4-(benzyloxy)-2-hydroxyphenyl)ethanone (3.36 g, 13.9 mmol) in anhydrous DMF (15 ml) was added NaH (0.62 g, 15.5 mmol). The mixture was allowed to stir at RT for 30 min, and a solution of (R)-oxiran-2-ylmethyl 4-methylbenzenesulfonate (3.17 g, 13.9 mmol) in DMF was added dropwise at RT. The mixture was slowly heated to 60° C. and stirred for 3 h. The reaction was quenched by addition of water (80 ml) and extracted three times with EtOAc. The combined organic layers were extracted twice with aq 1 M NaOH and washed with water and brine. The organic layer was dried with Na2SO4 and concentrated. The crude product obtained was purified by column chromatography with EtOAc/heptane (1:1) as eluent to afford the title compound (2.64 g) as a white solid.

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