Approximately 473 L of methylene chloride was added to the reaction vessel to dilute the suspension. The suspension containing the product (II) was then cooled to 5-10 DEG C.

• 在反应容器中加入约473升二氯甲烷以稀释悬浊液。将含产品(II)的悬浊液冷却至5－10℃。