this Q about the Grignard reaction using magnesium metal phenymagnesium bromide (reagent) will be readily formed under anhydrous conditions and then reacted with benzophenons to form triphenylmethanol

3) How does biphenyl form during this reaction? What other by-product is potentially formed during this reaction? What is the purpose of the hexanes during the work-up step? 1) Provide a carbonyl-containing compound and the Grignard reagent that would be needed to synthesize 3methyl-1,1-diphenylbutan-1-ol