Photochemietry of l,l-dimethy1-4-phenyl- and 1-Meahyl-1-phenyl-1 ,I-dihydro- naphthalene; evidence for a photochemical, eigmatropb [I,O]H-ehift. Swmmury. Irradia- tion of l,l-dimethyl-4-pbcnyl-l, 2-dihydronaphthalene (11) and l-methyl-l-phenyl-l,2-dihydru- naphthalene (8) in pentana ...