Synthesis of organobismuth compounds via dia ryliodonium salts

Summary

• 1. A method was developed for the synthesis of organobismuth compounds via diaryliodonium salts. By this method we prepared the following compounds: triphenylbismuthine, tri-p-tolylbismuthine, tris-p-methoxyphenylbismuthine, tris-p-bromophenylbismuthine, tris-p-chlorophenylbismuthine, tris-p-nitrophenylbismuthlne, and bis[methoxycarbonyl)phenyl]bismuth chloride.

• 2. The decomposition of iodonium salts with bismuth powder with formation of organobismuth compounds occurs only in presence of bismuth trichloride.

• 3. It is suggested that the initial products of the decomposition of iodonium salts with bismuth are compounds of the types ArBiCl₂ and Ar₂BiCl.

• 4. The decomposition of diphenyliodonium chloride, bromide, and iodide with bismuth powder was carried out in presence of BiCl₃. In the case of diphenyliodonium iodide the yield of triphenylbismuthine was considerably lower than in the decomposition of diphenyliodonium chloride.