Use larock reaction to synthesis benzofuran problem?

I want to synthesis the benzofuran by larock reaction, but it always fails. In my case, I used an iodine compound, NaHCO3, (Pph3)PdCl2, LiCl, internal alkyne compound and DMF as a solvent at 110oC...

11 November 2014 6,614 2 View