1: benzoylaminobenzene With n-butyllithium in tetrahydrofuran; hexane T=-78 - 20°C; 2: 4-methyl-benzaldehyde in tetrahydrofuran; hexane T=-78°C; 1 h;

1: benzoylaminobenzene With n-butyllithium in tetrahydrofuran; hexane T=-78 - 0°C; 1 h; 2: 4-methoxy-benzaldehyde T=-78 - 20°C; 1 h;