Triphenylphosphine → HCID 15308026, compound

Participants

Reaction Steps

The ester produced in Example 56 (5.0 g, 15 mmol) and triphenylphosphine (4.0 g, 15 mmol) were dissolved in 100 ml of benzene and the resulting solution put under a nitrogen atmosphere. N-Bromosuccinimide (2.7 g, 15 mmol) was added in portions to the above solution and the reaction stirred at room temperature overnight. The solvent was removed under reduced pressure to give 12.3 g of a brown oil. Purification of this oil by chromatography on 600 g of silica gel (230-400 mesh) using ethyl acetate-hexane as the eluent gave 4.52 g of a white solid. Recrystallization of this solid from diisopropyl ether gave the title compound as a white crystalline solid (4.12 g, 68%), mp 76°-78° C.

Provenance & Evidence