Прошу прощение за свой английский
Часть методики привожу дословно:
"After the completion of the dropwise addition of (VIII), the reaction mixture was slowly stirred for 6 hours without heating to warm to
room temperature. After stirring, IPA was removed under reduced pressure and dissolved in toluene 1000ml. The above obtained (IX) 25g and toluene 600ml and 5% TMAH aqueous solution 3.2g were placed in the reaction solvent equipped with the stirrer, dean stark, cooling tube at 120°C Toluene was heated to reflux while distilling off the water and recondensation reaction was carried out. After toluene reflux, the reaction mixture was stirred for 3 hours, warmed to room temperature and the reaction was terminated. After the reaction solution was neutralized with 10% citric acid 38g, washed with saturated aqueous sodium chloride solution and dehydrated over anhydrous magnesium sulfate. The magnesium sulfate was filtered off, then concentrated. Recondensate 24.5g (IX) was obtained"
Меня смущает предложение выделенное красным цветом: после удаления из реакционной смеси изопропанола
добавляют 1000 мл толуола. Откуда потом берется 600 мл толуола? Это часть раствора от добавленного литра
толуола берется для дальнейшей обработки, или добавляется еще 600 мл толуола и 3,2 грамма катализатора?
Помогите пожалуйста разобраться.
С уважением.