sodium hydroxide; diphenylditellane; N-benzyl-N,N,N-triethylammonium chloride in benzene 21 h; Yields of byproduct given;

sodium hydroxide; N-benzyl-N,N,N-triethylammonium chloride 1.) benzene, 6.5 h, 2.) benzene, 21 h; Yield givenMultistep reaction. Yields of byproduct given;