Реакция #216804

Уравнение реакции

sodium iodide

chloromethyl ethyl ether

potassium tert-butoxide

2,3-dibromo-5-(p-chlorophenyl)-4-[(trifluoromethyl)sulfonyl]pyrrole

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title product

Выход 74.2%

2,3-Dibromo-5-(p-chlorophenyl)-1-(ethoxymethyl)-4-[(trifluoromethyl)sulfonyl]pyrrole

Выход 74.2%

Растворители

hexane

water

tetrahydrofuran

tetrahydrofuran

Условия реакции

Обработка

1. 1
   workup.STIRRINGstirred for five minutes
2. 2
   workup.STIRRINGstirred at room temperature for several hours
3. 3
   Экстракцияextracted with ether
4. 4
   ПромывкаThe combined organic extracts are washed with water and brine
5. 5
   Сушкаdried over anhydrous sodium sulfate
6. 6
   Концентрированиеconcentrated in vacuo
7. 7
   Другоеto give an orange oil
8. 8
   Фильтрацияfiltered

Методика

A solution of potassium tert-butoxide (0.62 g, 0.0055 mol) in tetrahydrofuran is treated with 2,3-dibromo-5-(p-chlorophenyl)-4-[(trifluoromethyl)sulfonyl]pyrrole (2.34 g, 0.005 mol), stirred for 15 minutes, treated with sodium iodide (0.82 g, 0.0055 mol), stirred for five minutes, treated with a solution of chloromethyl ethyl ether (0.52 g, 0.0055 mol) in tetrahydrofuran, stirred at room temperature for several hours, poured into water and extracted with ether. The combined organic extracts are washed with water and brine, dried over anhydrous sodium sulfate and concentrated in vacuo to give an orange oil. The oil is slurried in hexane and filtered to obtain the title product as a pale yellow solid (1.95 g, mp 133°-135° C.) which is identified by 1HNMR and 19FNMR spectral analyses.

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