Triphenylphosphine → HCID 67384983, compound

Participants

Reaction Steps

A dried flask fitted with a condenser was charged with 2,7-dibromo-4-nitro-9,10-dihydro-phenanthrene (1.1) (45.00 g, 383.0 mmol), triphenylphosphine (77.04 g, 262.3 mmol) and 1,2-dichlorobenzene (235 cm3). The resulting mixture was refluxed for 4 hours until completion of reaction, then was cooled down and the solvent wasremoved in vacuo. The crude product was purified by column chromatography (gradient, 90:10 to 70:30; petroleum ether:ethyl acetate as eluent) and then recrystallized in a mixture of petroleum ether (80-100° C.) and toluene (ca. 1:1). (24.03 g, yield 57.2%): NMR (1H, 300 MHz, DMSO): δ 11.09 (s, 1H), 7.46 (d, J=0.9 Hz, 2H), 7.12 (d, J=0.9 Hz, 2H), 3.25 (s, 4H).

Provenance & Evidence