.In case of alkyl benzene, the acetylation takes place at the benzylic C-H bond (Scheme 15).

Scheme 15

1.6.2.4 Dehydrogenation

Aliphatic amines readily undergo reaction with LTA to give nitriles, while the reactions of N,N’-disubstituted hydrazines afford azo compounds (Scheme 16). These reaction conditions are effective for the oxidation of 4,4’-dihydroxybiphenyl to afford diphenoquinone.

Scheme 16

Examples

J. Xia, Y.-Z. Hui, Tetrahedron: Asymmetry, 1997, 8, 451.

M. G. Banwell, G. S. Forman, J. Chem. Soc., Perkin Trans. 1, 1996, 2565.