Реакция #40268

Уравнение реакции

1-chloro-6-bromo-2-naphthol

1-heptyne

→

1-chloro-6-(1-pentynyl)-2-naphthol

Выход 88.7%

Растворители

triethylamine

Условия реакции

Обработка

1. 1
   ДругоеThe synthesis of (S7-3)
2. 2
   Другоеdescribed in Synthesis
3. 3
   Температураrefluxed for 6 hours
4. 4
   ТемператураThe reaction solution was cooled to room temperature
5. 5
   workup.DISTILLATIONdistilled under a reduced pressure
6. 6
   Другоеto remove the solvent
7. 7
   workup.ADDITIONthe residue was added with ethyl acetate
8. 8
   Фильтрацияfiltered by celite
9. 9
   ПромывкаThe resulting solution was washed with 1N HCl(aq) and water
10. 10
    Сушкаdried over anhydrous magnesium sulfate
11. 11
    ДругоеThe solvent was removed by distillation under a reduced pressure
12. 12
    ДругоеThe residue was purified by silica gel column chromatography
13. 13
    Другоеdried under a reduced pressure

Методика

The synthesis of (S7-3) was carried out following the method described in Synthesis, No. 9, 1439 (2004). At first, 38.3 g of 1-chloro-6-bromo-2-naphthol (S1-2), 5.2 g of PdCl2(PPh3)2, 0.71 g of copper iodide and 400 ml of triethylamine were added to a reactor in nitrogen atmosphere, stirred at room temperature, added with 35.8 g of 1-heptyne (S7-2) and then refluxed for 6 hours. The reaction solution was cooled to room temperature and distilled under a reduced pressure to remove the solvent, and then the residue was added with ethyl acetate and filtered by celite. The resulting solution was washed with 1N HCl(aq) and water, and dried over anhydrous magnesium sulfate. The solvent was removed by distillation under a reduced pressure. The residue was purified by silica gel column chromatography using heptane/ethyl acetate=3/1 as an eluting solvent and dried under a reduced pressure to obtain 32.3 g of 1-chloro-6-(1-pentynyl)-2-naphthol (S7-3).

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