Metathesis of triorganylbismuth V compounds

A benzene solution of triphenylbismuth dichloride (1.7 g, 3.3 mmol) was mixed with an aqueous solution of freshly prepared silver oxide (0.7725 g, 3.3 mmol) and the resulting mixture was stirred for 5 h at room temperature in the dark. The benzene layer was separated by decantation, laid on molecular sieves for 12 h, and was then filtered and concentrated by 

Water (1 ml) was added to a solution of triphenylbismuthine A -trifluoromethanesulfonylimide (0.587 g, 1.00 mmol) in dioxane (10 ml). The reaction mixture was stirred for 24 h at ambient temperature. During this period, a white solid precipitated it was filtered off and identified as triphenylbismuthine oxide (0.492 g, 94%) from its melting point (152-154°C) [93JFC(63)179]. 

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