Реакция #442352

Уравнение реакции

diphenyliodonium chloride

fluoroboric acid

phosphorous acid

diphenyliodonium bisulfate

→

diphenyliodonium fluoroborate

Растворители

water

Условия реакции

Обработка

1. 1
   Другоеis prepared by the addition at 60° C. of an aqueous solution
2. 2
   workup.ADDITIONcontaining 29.2 g
3. 3
   ДругоеThe silver halide that precipitates
4. 4
   Фильтрацияis filtered off
5. 5
   Концентрированиеthe filtrate concentrated

Методика

The aromatic iodonium complex salts may be prepared by metathesis of corresponding aromatic iodonium simple salts (such as, for example, the diphenyliodonium bisulfate) in accordance with the teachings of Beringer, et al., J. Am. Chem. Soc. 81, 342 (1959). Thus, for example, the complex salt diphenyliodonium tetrafluoroborate is prepared by the addition at 60° C. of an aqueous solution containing 29.2 g. (150 millimoles) silver fluoroborate, 2 g. fluoroboric acid, and 0.5 g. phosphorous acid in about 30 ml. of water to a solution of 44 g. (139 millimoles) of diphenyliodonium chloride. The silver halide that precipitates is filtered off and the filtrate concentrated to yield diphenyliodonium fluoroborate which may be purified by recrystallization.

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