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该文提出了一种苯甲醛邻位定向卤代的方法：将苯甲醛与苯胺作用转化为Ｓｃｈｉｆｆ 碱，再经邻位钯化活化邻位氢，然后进行卤代，得到单一的邻位卤代苯甲醛
In this paper, a method of ortho-halogenated benzaldehyde is proposed: the benzaldehyde and aniline are converted to Schiff base, and the ortho-position hydrogen is activated by palladium in the ortho-position and then halogenated to obtain a single ortho-halo Benzaldehyde