Реакция #816382

Уравнение реакции

iodide

hydroxide

iodide

R′I

4-cyclohexyl-1,1-dimethyl-piperazinium

→

4-cyclohexyl-1,1-dimethyl-piperazinium hydroxide

Растворители

water

Условия реакции

Обработка

1. 1
   workup.ADDITION62 g of Dowex SBR resin is added to the solution
2. 2
   Другоеobtained
3. 3
   ФильтрацияAfterwards, it is filtered
4. 4
   Промывкаwashed with distilled water

Методика

The iodide of the cation is exchanged for hydroxide using an ion exchange resin in accordance with the following procedure: 20 g (62 mmol) of the iodide of the cation (R′I) is dissolved in water. 62 g of Dowex SBR resin is added to the solution obtained and it is kept under stirring until the following day. Afterwards, it is filtered, washed with distilled water and a solution of 4-cyclohexyl-1,1-dimethyl-piperazinium hydroxide (R′OH) is obtained which is titrated with HCl (aq.) using phenolphthalein as indicator, obtaining an efficiency in the exchange of higher than 90%. The final solution contains 1 equivalent of hydroxide per 1000 g of solution.

Источник