Tetrahydrofuran → HCID 86725394, compound

Participants

Reaction Conditions

Reaction Steps

To a mixture of the product of Example 28E (200 mg, 0.4 mmol) and tetrakis(triphenylphosphine)palladium (50 mg, 0.04 mmol) was added 0.5M 2,6-dichlorobenzylzinc bromide in tetrahydrofuran (4 mL, 2 mmol) under nitrogen atmosphere and the mixture was heated at 70° C. for 16 hours. After cooling to ambient temperature, the mixture was diluted with dichloromethane (50 mL) and washed with saturated aqueous sodium bicarbonate. The organic phase was separated and the aqueous phase was extracted with dichloromethane (2×20 mL). The combined organic phase was washed with brine, dried over sodium sulfate, filtered and concentrated. The residue was purified by flash chromatography on silica gel (200-300 mesh) eluting with 97/3 dichloromethane/methanol to give the title compound. MS: 615 (M+H+).

Provenance & Evidence