in benzene-d6 byproducts: AgBr; Addn. of a soln. of iron compound to a frozen suspn. of AgBF4 at liquid nitrogen temp., sealing NMR tube under high vac., warming to room temp. and shaking.; Not isolated, NMR, MS, GC.;

lithium iodide in tetrahydrofuran N2 or Ar atmosphere; refluxing (overnight); removal of solvent, extn. (CH2Cl2), filtration (Al2O3), chromy. (Al2O3, petroleum ether/H2Cl2 3:1); elem. anal.;