抄録
Following considerations were made regarding the so-called second-type Beckmann rearrangement by which nitrile is formed from ketoxime.
1) Such rearrangement easily occurs with compounds in which C-C bond (C-H bond in aldoxime) in the transposition of the oxime group is easily cleaved.
2) Such rearrangement was confirmed to occur primarily by cleavage without passing through an intermediate of acid aride or imide, by detailed studies on camphor oxime and anti-α-isonitrosocamphor.
3) It was pointed out that the rearrangement agent does not directly attack the β-carbon, the carbon atom next to the carbon bonding with nitrogen.
