تفاعل #53766

معادلة التفاعل

sodium hydrogen sulfite

9,9′-spirobifluorene

bromine

bromine

→

white solid

المردود 97.2%

2-bromo-9,9′-spirobifluorene

المردود 97.2%

المذيبات

water

ظروف التفاعل

المعالجة

1. 1
   أخرىequipped with a stirrer
2. 2
   workup.ADDITIONto mix
3. 3
   ترشيحwas filtered
4. 4
   غسيلwashed with water
5. 5
   أخرىThus, 298 g of a crude product was obtained
6. 6
   أخرىThe crude product was recrystallized

الإجراء التجريبي

In a two-liter flask having four openings equipped with a stirrer, a thermometer, a dropping funnel, and a reflux condenser, respectively, 1 L of water, three drops of a surfactant, 10.7 g (0.0395 mol) of anhydrous iron (III) chloride, and 253 g (0.8 mol) of 9,9′-spirobifluorene were placed and stirred to mix. By adding 102 g (0.638 mol) of bromine into the mixture, a reaction was started. After the reaction had been conducted at room temperature for 3 hours, unreacted bromine was decomposed with an aqueous solution of sodium hydrogen sulfite. The reaction product, which was a solid, was filtered and washed with water. Thus, 298 g of a crude product was obtained. The crude product was recrystallized using dioxane, thus resulting in 245 g (0.62 mol, yield of 78%) of a white solid, which is the target product. This product was subjected to gas chromatography and the purity of the product was 99%.

المصدر