| abstract |
1350066 Bis - (10,9 - borazarophenanthryl) ether SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NV 27 May 1971 [29 May 1970] 25992/70 Heading C2B [Also in Division C5] Boron trichloride in dry xylene is added dropwise to 2-aminobiphenyl in dry xylene to give a solution which is refluxed and treated with AlCl 3 . Solid bis - (10,9 - borazarophenanthryl) ether is precipitated by adding water, and is recrystallized from methyl-cyclohexane (mp. 166-168‹ C.). The compound is used as an antioxidant for lubricants, fuels and hydraulic fluids. |