Phenylmagnesium bromide solution contains 3M phenylmagnesium bromide in diethyl ether. It can act as a strong acid and Lewis acid. It can undergo addition reaction with many unsaturated functional groups. The phenyl group can displace halide from other organic compounds. Phenylmagnesium bromide is a Grignard reagent. Reaction of β-cyclohexanedione (dihydroresorcinol) with phenylmagnesium bromide has been investigated.

Phenylmagnesium bromide was used for the synthesis of end-functionalized regioregular poly(3-alkylthiophene)s. It was also used for the monoalkylation of aliphatic primary amine to generate secondary amines by the Grignard reaction of 1-[(alkylamino) methyl] benzotriazoles.
It may be used for synthesis of the following:

• 1,3,3-trimethyl-6-phenyl-2-oxabicyclo[2.2.2]octan-6-ol
• 6-benzyl-1,3,3-trimethyl-2-oxabicyclo[2.2.2]octan-6-ol
• (3-(2-Dithiobenzoatepropionyl)propyl)dimethylmethoxysilane, reversible addition-fragmentation chain transfer polymerization (RAFT)-silane agent
• series of o-substituted benzophenones

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储存温度低于 25°C 可能形成结晶镁盐。将容器移至温暖处不时温和搅拌可使固体重新溶解