[C:1]1([OH:7])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1>O=[Th]=O>[C:1]1([O:7][C:1]2[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[CH:5]1[C:6]2[C:2]3[CH:3]=[CH:4][CH:5]=[CH:6][C:1]=3[O:7][C:1]=2[CH:2]=[CH:3][CH:4]=1However, it is more desirable to prepare diaryl ethers by the dehydration of phenols. The dehydration was first reported by P. Sabatier and A. Mailhe (Compt. Rend., 151, 1910, 492-494). They passed phenol over a thoria catalyst at 410° C. and atmospheric pressure to obtain diphenyl oxide and dibenzofuran as a byproduct.
Wird geladen…