تفاعل #2122466

معادلة التفاعل

4,4′-bis(chloromethyl)-1,1′-biphenyl

p-xylene

→

4,4′-bis(2,5-dimethylbenzyl)-1,1′-biphenyl

المذيبات

ethanol

ظروف التفاعل

المعالجة

1. 1
   workup.STIRRINGAfter stirring overnight at room temperature
2. 2
   أخرىThe mixture was transferred to a separatory funnel
3. 3
   غسيلwashed with dilute aqueous HCl
4. 4
   تجفيفThe organic layer was dried over magnesium sulfate
5. 5
   تركيزconcentrated to dryness under vacuum on a rotary evaporator
6. 6
   أخرىThe tan solid was recrystallized from toluene yielding a white crystalline product, mp=144.6 C

الإجراء التجريبي

A 100mL flask was charged with 4,4′-bis(chloromethyl)-1,1′-biphenyl (1.0 g) and p-xylene (25 mL). To the clear solution stirring at room temperature was added titanium tetrachloride (6 drops) and the mixture instantly became dark brown. After stirring overnight at room temperature, ethanol (2mL) was added to kill the catalyst, and the mixture became a light, cream colored suspension. The mixture was transferred to a separatory funnel and washed with dilute aqueous HCl followed by saturated aqueous sodium bicarbonate. The organic layer was dried over magnesium sulfate, and concentrated to dryness under vacuum on a rotary evaporator. The tan solid was recrystallized from toluene yielding a white crystalline product, mp=144.6 C. GC/MS, HNMR, CNMR and IR were all consistent with the desired product.

المصدر