SEARCH Articles Figures Tables Bardhan-Sengupta phenanthrene synthesis Benzo phenanthrenes synthesis Cyclopropa phenanthrenes, synthesis Haworth phenanthrene synthesis Hayworth phenanthrene synthesis Phenanthren Phenanthrene Phenanthrene Pschorr synthesis Phenanthrenes Phenanthrenes synthesis Phenanthrenes synthesis Pschorr synthesis of phenanthrenes Synthesis of Substituted Phenanthrenes