1: 1-bromo-2,4,6-trislt;bis(trimethylsilyl)methylgt;benzene With tert.-butyl lithium in tetrahydrofuran; pentane T=-78°C; 0.5 h; 2: With phosphorus trichoride in tetrahydrofuran; pentane T=20°C; 15 h; 3: methyllithium in tetrahydrofuran; diethyl ether T=-78 - 20°C;

1: {2,4,6-tris-(bis-(trimethylsilyl)methyl)phenyl}lithium With phosphorus trichoride in tetrahydrofuran 2: methyllithium in tetrahydrofuran

in diethyl ether