The solvent was evaporated under reduced pressure and water (100 ml) and acetic acid (12 ml) were added to the residue.

溶液减压蒸馏，在残留物中加入100毫升水和12毫升醋酸。

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The solvent was evaporated under reduced pressure and water (100 ml) and acetic acid (12 ml) were added to the residue.

溶液减压蒸馏，在残留物中加入100毫升水和12毫升醋酸。

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