Reacción #454041

Ecuación de reacción

n-Butyllithium

3,4-(ethylenedioxy)thiophene

Tributylstannyl chloride

→

2-(tributylstannyl)-3,4-(ethylenedioxy)thiophene

Rendimiento 98.0%

Disolventes

THF

Condiciones de reacción

Tratamiento posterior

1. 1
   Temperaturato warm to room temperature
2. 2
   FiltraciónAt room temperature the mixture was filtered
3. 3
   Otrodried

Procedimiento

n-Butyllithium (77 mL, 192.5 mmol, 2.5 M solution in hexane) was added dropwise at -78° C. to a solution of 3,4-(ethylenedioxy)thiophene (25 g, 175.9 mmol) in anhydrous THF (100 mL) under nitrogen. The solution was stirred for 1 h and warmed to -40° C. Tributylstannyl chloride (85.89 g, 263.9 mmol) was added and the entire solution was finally allowed to warm to room temperature. At room temperature the mixture was filtered using Celite and the solvent was stripped. The organo-tin compound was vacuum dried to give 2-(tributylstannyl)-3,4-(ethylenedioxy)thiophene, obtained as a dark yellow liquid, yield=98%. MS(EI) m/z (rel int): 375 [(M)+ --C4H8, 100%] and 319[(M)+ --C8H16, 18%].

Fuente