is seems to me that the reaction is not difficult,

general conditions should be PCl5/Et2O or DCM. Check the references below

Unexpected rearrangement during the gas-phase dehalogenation approach to benzodithiophenes

By Aitken, R. Alan and Oyewale, Adebayo O. From RSC Advances, 5(25), 19379-19381; 2015

Generation and trapping of thiophen-2-ylchlorocarbenes from 2-dichloromethylthiophenes and 3-chloro-3-(thiophen-2-yl)diazirine

By Baird, Mark S. and Bruce, Ian From Journal of Chemical Research, Synopses, (5), 134-5; 1990

dear Adriano Mollica I agree with your speech but the product is very difficult to separate because it is unstable. Also, the product need vacuum distillation at 3 mmHg to purify it and these conditions are very difficult to work it in my lab.

if you have any else idea please, tell me about it

thanks a lot for your answer

See attachment

also the last posted procedure has distillation.

Thanks a lot for your answer