反应详情

Dried ethyl ether (40 ml) was added to activated magnesium (1.22 g; 50 mmol), and 1-bromododecane (12.46 g; 50 mmol) was added thereto to prepare a Grignard reagent. Then, Ni(dppp)Cl2 (33 mg) was added thereto, and 3-bromothiophene (8 g; 49 mmol) dissolved in 10 ml of ether was slowly added dropwise. The reaction solution was refluxed for one day, and then a mixture of 2N HCl/ice (50 ml) was added to terminate the reaction. The resultant was extracted by using ethyl ether, and the solvent was distilled off under reduced pressure. The residue was dissolved in DMF (50 ml) and filtered to remove remaining paraffin. The filtrate was concentrated, and then the residue was distilled off under vacuum to obtain a colorless liquid of 3-dodecylthiophene (10.5 g; 85%).

1. additionwas added
2. additionwas slowly added dropwise
3. temperatureThe reaction solution was refluxed for one day
4. additionwas added
5. customto terminate
6. customthe reaction
7. extractionThe resultant was extracted
8. distillationthe solvent was distilled off under reduced pressure
9. dissolutionThe residue was dissolved in DMF (50 ml)
10. filtrationfiltered
11. customto remove
12. concentrationThe filtrate was concentrated
13. distillationthe residue was distilled off under vacuum