Dimethyl Sulfoxide → 6-((benzyloxy)methyl)dihydro-2H-pyran-3(4H)-one

関与物質

反応条件

反応手順

DMSO (1.15 mL, 16.2 mmol) was added to a stirred solution of oxalyl chloride (1 mL, 10.8 mmol) in dichloromethane (60 mL) at −78° C. After 10 minutes, a dichlotomethane solution of 6-(benzyloxymethyl)tetrahydro-2H-pyran-3-ol (14) (1.20 g, 5.40 mmol) was added. Stirring was continued for one hour then triethylamine (3.8 mL, 27 mmol) was added and slowly warmed to 0° C. The reaction was poured into saturated NH4Cl solution and the organic phase was washed with brine and dried (NaSO4). The residue was purified over silica gel using EtOAc and hexanes to give 6-(benzyloxymethyl)dihydro-2H-pyran-3(4H)-one (15).

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