1: 2-bromophenyl isocyanide With n-butyllithium in tetrahydrofuran; hexane T=-78°C; 0.25 h; Inert atmosphere; 2: 3-isocyanatoiodopropane in tetrahydrofuran; hexane T=-78 - 20°C; Inert atmosphere;

[Li(tmeda)]2[Fe(C2H4)4] in tetrahydrofuran T=-20°C;

1: 3-isocyanatoiodopropane With [Fe(C2H4)4][Li(tmeda)]2 in tetrahydrofuran T=-20°C; 2: phenyl magnesium halide in tetrahydrofuran; diethyl ether T=-20°C; Further stages.;