Sodium Iodide → 4'-Hydroxy-3'-iodo-3-methyl-1,1'-biphenyl-4-carbonitrile

Participants

Reaction Conditions

Reaction Steps

The product from Example 106B (4.67 g, 22.3 mmol), NaI (3.343 g, 22.3 mmol), and NaOH (892 mg, 22.3 mmol) were combined in methanol (70 mL) at 0° C. and treated with bleach (5.25%, 31.6 g) dropwise over 30 minutes. After being stirred at 0° C. for 80 minutes, the mixture was quenched with 10% aqueous sodium thiosulfate (10 mL). The mixture was acidified with 1M aqueous HCl (25 mL), neutralized with dipotassium hydrogen phosphate, recooled to 0° C., and filtered. The solids were rinsed with water, then mostly dissolved in 50% EtOAc/hexanes and filtered. When this filtrate was mostly concentrated crystals began to form. The solids were slurried with 20% EtOAc/hexanes, collected by filtration, and washed with 10% EtOAc/hexanes followed by hexanes to provide the impure title compound as a light tan powder (52% yield). MS (ESI APCI negative ion detection) m/z 334 (M−H)−; 1HNMR (300 MHz, d6-DMSO) δ 2.52 (s, 3H), 6.98 (d, 1H), 7.58-7.63 (m, 2H), 7.73 (s, 1H), 7.78 (d, 1H), 8.06 (d, 1H), 10.66 (s, 1H).

Provenance & Evidence