Convert benzaldehyde into cyanobenzene
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Benzaldehyde + KMnO4 -----(oxidization)-------- benzoic acid
benzoic acid + sodalime --- benzene
benzene + PCl3 ----- chlorobenzene
and finally,
chlorobenzene + KCN or CuCN ------- cyanobenzene/benzonitrile.
benzoic acid + sodalime --- benzene
benzene + PCl3 ----- chlorobenzene
and finally,
chlorobenzene + KCN or CuCN ------- cyanobenzene/benzonitrile.
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