[JennaBethMarie]

I'm working on a lab synthesis reaction, and I'd like some feedback regarding workability.  The synthesis begins by reacting ethyl acetate (an ester) with phenyl magnesiumbromide (a Grignard process.)  Then, I hope to dehydrate the resultant alcohol to create 1,1-diphenylethene.  However, I'm not sure about two parts.  First, I'm looking for any advice regarding purifying my product following the grignard reaction.  Second, I know that H2SO4 is the best dehydrating agent for a tertiary alcohol; however it also can create an alcohol from an alkene.  What's the best way/amount to use of the H2SO4 in order to maximize yield while decreasing occurance of byproducts?

I appreciate any feedback; thanks!!