The Synthesis of Biphenyl-3, 3’, 5, 5’-d<sub>4</sub> and Biphenyl-d<sub>10</sub>

Biphenyl-3, 3', 5, 5'-d/sub 4/ has been prepared from anilin hydrobromide by a 4-step synthesis. Biphenyl-d/sub 10/ has been prepared from benzene by a 3-step synthesis. The two deuterated biphenyls were 98.0 and 95.1 mole perceat pure, respectively; the impurities consisted of biphenyls with a lower deuterium coateat. (auth)