Studies on tellurium-containing heterocycles. Part 10.1 2-Benzotelluropyrylium salts: first preparation and reactions with Grignard reagents
Abstract
The first simple preparation of 2-benzotelluropyrylium salts 4 from o-ethynylbenzyl bromides 1 in two steps, and the characteristic reaction of these salts 4 with benzylmagnesium bromide and other Grignard reagents are described.