Description 9-phenanthrylmagnesium bromide is a Grignard reagent. It can be prepared using magnesium turnings and 9-bromophenanthrene under anhydrous condition.9-Phenanthrylmagnesium bromide can be used as a reagent to prepare:9-alkyl and 9-arylthiophenanthrenes by reacting with alkyl or aryl thiol compounds.(S)-α-methylbenzyl 1-(9-phenanthryl)-2-naphthoate by treating with (S)- α -methylbenzyl methoxy-2-naphthoate.1-(9-Phenanthryl)-1-phenylethanol (carbinol) by reacting with acetophenone. The obtained carbinol undergoes dehydration reaction in the presence of acetic acid and sulfuric acid to afford 1-(9-phenanthryl)-1-phenylethene (PPE).