تفاعل #955961

معادلة التفاعل

tert-butyllithium

trimethyltin chloride

5,6-bis(2-ethylhexyl)naphtho[2,1-b:3,4-b′]dithiophene

→

oil

المردود 84.0%

(5,6-bis(2-ethylhexyl)naphtho[2,1-b:3,4-b′]dithiophene-2,9-diyl)bis(trimethylstannane)

المردود 84.0%

المذيبات

—

hexanes

diethyl ether

ظروف التفاعل

المعالجة

1. 1
   أخرىA dry 100-mL three-neck flask was flushed with N2
2. 2
   أخرىvia deoxygenated syringe
3. 3
   أخرىvia deoxygenated syringe
4. 4
   درجة الحرارةthe solution was chilled to 0° C.
5. 5
   workup.STIRRINGstirring
6. 6
   workup.WAITwas continued for 5 minutes, at which
7. 7
   درجة الحرارةwas cooled back to −78° C
8. 8
   workup.STIRRINGstirring
9. 9
   workup.WAITcontinued for 30 minutes at −76° C
10. 10
    أخرىThe cooling bath was removed
11. 11
    درجة الحرارةto warm to ambient temperature
12. 12
    درجة الحرارةcool DI water (10 mL)
13. 13
    workup.ADDITIONwas slowly added to the reaction flask
14. 14
    workup.ADDITIONThen, the reaction mixture was poured into 50 mL of cool water
15. 15
    استخلاصextracted with MTBE (100 mL) three times
16. 16
    غسيلThe combined organic layer was washed with water two times
17. 17
    تجفيفdried over anhydrous magnesium sulfate (MgSO4)
18. 18
    ترشيحAfter the product was filtered
19. 19
    أخرىthe solvent was removed by rotary evaporation
20. 20
    أخرىThe crude product was purified by precipitation into methanol from a THF solution

الإجراء التجريبي

A dry 100-mL three-neck flask was flushed with N2 and was charged with 5,6-bis(2-ethylhexyl)naphtho[2,1-b:3,4-b′]dithiophene (0.50 g, 1.1 mmol) and diethyl ether (Et2O) (11 mL, 0.10 M) via deoxygenated syringe. The reaction flask was cooled to −78° C. and a 1.3 M solution of tert-butyllithium in hexanes (2.3 mL, 3.0 mmol) was added drop-wise via deoxygenated syringe. After 30 minutes of stirring at −78° C., the solution was chilled to 0° C. and stirring was continued for 5 minutes, at which point the reaction mixture was cooled back to −78° C. A 1 M solution of trimethyltin chloride (4.4 mL, 4.4 mmol) in hexanes was added to the reaction flask drop-wise and stirring continued for 30 minutes at −76° C. The cooling bath was removed and the reaction mixture was allowed to warm to ambient temperature. As the reaction was completed, cool DI water (10 mL) was slowly added to the reaction flask. Then, the reaction mixture was poured into 50 mL of cool water and extracted with MTBE (100 mL) three times. The combined organic layer was washed with water two times and dried over anhydrous magnesium sulfate (MgSO4). After the product was filtered, the solvent was removed by rotary evaporation. The crude product was purified by precipitation into methanol from a THF solution to yield pale yellow oil (0.73 g, 84%).

المصدر