Реакция #2446068

Уравнение реакции

KHMDS

DME

5-(ethylsulfonyl)-1-phenyl-1H-tetrazole

4-(3-propylcyclopentyl)cyclohexanecarboaldehyde

Potassium Hexamethyldisilazide

→

(E)-1-(prop-1-enyl)-4-(3-propylcyclopentyl)cyclohexane

Растворители

THF

Условия реакции

Обработка

1. 1
   Другоеobtained in the second step in Example 3, in a reaction vessel under an atmosphere of nitrogen
2. 2
   ТемператураThe reaction solution was warmed to room temperature
3. 3
   Экстракцияwas extracted with diethyl ether
4. 4
   workup.ADDITIONafter the addition of water (50 ml)
5. 5
   ПромывкаThe resulting organic layer was washed with water
6. 6
   Сушкаdried over anhydrous sulfate
7. 7
   workup.DISTILLATIONthe solvent was distilled off under reduced pressure
8. 8
   ДругоеThe residue was purified by silica gel chromatography (eluent: ethyl acetate/n-heptane= 1/9 by volume)
9. 9
   Другоеpurified by means of a preparative HPLC system, Model PLC-561

Методика

DME (1,2-dimethoxyethane; 80 ml) and 5-(ethylsulfonyl)-1-phenyl-1H-tetrazole (4.62 g) were added to 4-(3-propylcyclopentyl)cyclohexanecarboaldehyde (3.29 g) obtained in the second step in Example 3, in a reaction vessel under an atmosphere of nitrogen, and the mixture was cooled to −70° C., and then KHMDS (Potassium Hexamethyldisilazide; 20%, in a THF solution) (23.9 ml) was added dropwise. The reaction solution was warmed to room temperature, and was extracted with diethyl ether after the addition of water (50 ml). The resulting organic layer was washed with water and dried over anhydrous sulfate, and the solvent was distilled off under reduced pressure. The residue was purified by silica gel chromatography (eluent: ethyl acetate/n-heptane= 1/9 by volume) and then purified by means of a preparative HPLC system, Model PLC-561 made by GL Sciences Inc. to give (E)-1-(prop-1-enyl)-4-(3-propylcyclopentyl)cyclohexane (2.0 g).

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