反应 #2182273

反应方程式

CsF

tributylstannyl-thiophene

dichloromethane

→

Bu3SnF

溶剂

toluene

反应条件

后处理

1. 1
   workup.ADDITIONwere added
2. 2
   温度After cooling to room temperature

实验过程

Step a) Under inert atmosphere, to a mixture of chromophore 1, 1 mol % catalysator Pd(PPh3)4, 1 equivalent of CsF in toluene, 1.2 equivalent of tributylstannyl-thiophene were added. The reaction mixture was stirred at 120° C. for 12 h. After cooling to room temperature, dichloromethane was added. The white salt (Bu3SnF) formed during the reaction was filtered off and the solvent removed under reduced pressure. Purification of the crude product was performed by column chromatography on silica gel with (4/6) dichloromethane/ethylacetate to give the pure thiophene derived squarylium dye 3.

来源