1: pyrrole With methylmagnesium bromide in tetrahydrofuran; diethyl ether T=-78 - 25°C; 1 h; Inert atmosphere; 2: 4-nitro-benzoyl chloride in tetrahydrofuran; diethyl ether T=20°C; 3 h; Inert atmosphere;

titanium tetrachloride in dichloromethane T=25°C; 2 h;

1: thionyl chloride 2: 32 percent / AlCl3 / Heating View Scheme

1: N-Pyrrolyl-lithium With zirconium tetrachloride in tetrahydrofuran; cyclohexane T=-78°C; 0.333333 h; Inert atmosphere; 2: With n-butyllithium in tetrahydrofuran; cyclohexane T=-78 - 45°C; Inert atmosphere; 3: 4-nitrobenzaldehdye in tetrahydrofuran; cyclohexane T=45°C; 48 h; Inert atmosphere;

Yield given. Multistep reaction;