1,2-二对甲苯基乙烷

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a suspension of 9.55 g Mg (0.39 mol) and a crystal of I2 in 500 ml anhydrous THF was added a solution of 100 g p-methylbenzylchloride (0.71 mol) in 150 ml anhydrous THF under an inert atmosphere in 30 minutes. The exothermic reaction caused the mixture to reflux. Subsequently the reaction mixture was refluxed for 3 hours. The solvent was evaporated under reduced pressure and the remaining white solid was treated with 400 ml pentane and 400 ml aqueous 10% HCl. The organic layer was extracted with 150 ml saturated NaCl (2 times) and dried with MgSO4. The solvent was evaporated under reduced pressure giving 69.8 g (0.33 mol, 93%) product as a white powder. The exothermic reaction to reflux Subsequently the reaction mixture was refluxed for 3 hours The solvent was evaporated under reduced pressure the remaining white solid was treated with 400 ml pentane and 400 ml aqueous 10% HCl The organic layer was extracted with 150 ml saturated NaCl (2 times) dried with MgSO4 The solvent was evaporated under reduced pressure

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 200 ml of anhydrous tetrahydrofuran (THF), 3.35 g (0.138 mol) of Mg turnings and a crystal of I2 were placed in a 500-ml three-necked round-bottomed flask equipped with a 100-ml dropping funnel, thermometer and reflux condenser. Then a solution of 35.15 g (0.25 mol) of α-chloro-p-xylene in 50 ml of anhydrous THF was added drop by drop. Heating was required to start the reaction, then self-heating was observed. After 3 hours, all of the Mg had dissolved. The reaction mixture was kept under reflux for 3 hours, then left to rest for one night. All the THF was evaporated at reduced pressure and the residue was treated with a mixture of 150 ml of hexane and 150 ml of 10% HCl. The organic phase was separated, washed with aqueous NaCl (3 times) and dried over Na2SO4. After evaporating the solvent, white crystals were isolated, and these were dried under vacuum at 70° C. 24.3 g of 1,2-di-p-tolylethane was obtained (yield: 92.4%). equipped with a 100-ml thermometer and reflux condenser Heating the reaction self-heating under reflux for 3 hours left to rest for one night All the THF was evaporated at reduced pressure the residue was treated with a mixture of 150 ml of hexane and 150 ml of 10% HCl The organic phase was separated washed with aqueous NaCl (3 times) dried over Na2SO4 After evaporating the solvent white crystals were isolated these were dried under vacuum at 70° C

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a suspension of 9.55 g Mg (0.39 mol) and a crystal of I2 in 500 ml anhydrous THF was added a solution of 100 g p-methylbenzylchloride (0.71 mol) in 150 ml anhydrous THF under an inert atmosphere in 30 minutes. The exothermic reaction caused the mixture to reflux. Subsequently the reaction mixture was refluxed for 3 hours. The solvent was evaporated under reduced pressure and the remaining white solid was treated with 400 ml pentane and 400 ml aqueous 10% HCl. The organic layer was extracted with 150 ml saturated NaCl (2 times) and dried with MgSO4. The solvent was evaporated under reduced pressure giving 69.8 g (0.33 mol, 93%) product as a white powder. The exothermic reaction to reflux Subsequently the reaction mixture was refluxed for 3 hours The solvent was evaporated under reduced pressure the remaining white solid was treated with 400 ml pentane and 400 ml aqueous 10% HCl The organic layer was extracted with 150 ml saturated NaCl (2 times) dried with MgSO4 The solvent was evaporated under reduced pressure

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 200 ml of anhydrous tetrahydrofuran (THF), 3.35 g (0.138 mol) of Mg turnings and a crystal of I2 were placed in a 500-ml three-necked round-bottomed flask equipped with a 100-ml dropping funnel, thermometer and reflux condenser. Then a solution of 35.15 g (0.25 mol) of α-chloro-p-xylene in 50 ml of anhydrous THF was added drop by drop. Heating was required to start the reaction, then self-heating was observed. After 3 hours, all of the Mg had dissolved. The reaction mixture was kept under reflux for 3 hours, then left to rest for one night. All the THF was evaporated at reduced pressure and the residue was treated with a mixture of 150 ml of hexane and 150 ml of 10% HCl. The organic phase was separated, washed with aqueous NaCl (3 times) and dried over Na2SO4. After evaporating the solvent, white crystals were isolated, and these were dried under vacuum at 70° C. 24.3 g of 1,2-di-p-tolylethane was obtained (yield: 92.4%). equipped with a 100-ml thermometer and reflux condenser Heating the reaction self-heating under reflux for 3 hours left to rest for one night All the THF was evaporated at reduced pressure the residue was treated with a mixture of 150 ml of hexane and 150 ml of 10% HCl The organic phase was separated washed with aqueous NaCl (3 times) dried over Na2SO4 After evaporating the solvent white crystals were isolated these were dried under vacuum at 70° C