1: pyrrole With n-butyllithium in tetrahydrofuran; hexane T=-78°C; 0.333333 h; Inert atmosphere; 2: With zirconium tetrachloride in tetrahydrofuran; hexane T=-78 - 20°C; Inert atmosphere; 3: p-methylbenzyl bromide in tetrahydrofuran; hexane T=20°C; 12 h; Inert atmosphere;

hydrazine hydrate in various solvent(s)

Yield given. Multistep reaction;