1: 1-[(p-bromophenyl)phenylmethylidene]-1H-cyclopropa[b]naphthalene With n-butyllithium in tetrahydrofuran T=-78°C; 1 h; 2: N,N-dimethyl benzamide in tetrahydrofuran T=-78 - 20°C;

1: With n-butyllithium in tetrahydrofuran T=-78°C; 1 h; 2: With air in tetrahydrofuran T=-78 - 20°C;