Where Did Biphenyl Come from?

Biphenyl is a benzenoid aromatic compound that consists of two benzene rings connected by a single covalent bond. Biphenyl occurs naturally in coal tar, crude oil, and natural gas. Formerly used as a fungicide for citrus crops.

How biphenyl is formed?

Biphenyl is formed via coupling of two phenyl radicals. The radicals are produced by homolytic bond cleavage of the C-Br bond in bromobenzene in the presence of Mg metal. Coupling of the phenyl radical with [MgBr] radical leads to formation of the Grignard reagent.

Is diphenyl and biphenyl same?

Biphenyl (also known as diphenyl, phenylbenzene, 1,1′-biphenyl, lemonene or BP) is an organic compound that forms colorless crystals.