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The procedure of benzal chloride and benzylchloride was obtained by chlorination toluene, then through catalytic acidic hydrolysis and oxidation, produced benzaldehyde. 本文研究了甲苯氯化得到苄叉二氯和氯化苄混合物，然后经催化酸解氧化制备苯甲醛，并探讨了氯化催化酸解及氧化的反应条件。