4-Hydroxybenzophenone → HCID 59487983, compound

Participants

Reaction Conditions

Reaction Steps

In a bulb-to-bulb distillation apparatus (“Kugelrohr”) 3 g (15.1 mmol) of 4-hydroxy-benzophenone and 1.9 g (7.6 mmol) of dibutyltin oxide are slowly heated to 150° C. in high vacuum (0.009 mbar). The mixture begins to melt and at 200° C. the distillation starts and is finished after about 10 minutes. After cooling the colorless distillate is identified as 4-hydroxy-benzophenone by 1H-NMR spectrum. The residue (about 3.3 g) is crystallized several times from hot toluene. 2.0 g of the title product are obtained as white crystals melting at 150-159° C. The structure is further confirmed by 1H-NMR and 13C-NMR spectra.

Provenance & Evidence