2-Nitrophenols spontaneously rearrange during alkylation with 2-bromo-2-methylpropionamide
in the presence of cesium carbonate in acetonitrile to the corresponding 2-hydroxy-2-methyl-N-(2-nitrophenyl)propionamides. Upon reduction of 2-aryloxy-2-methylpropionamides,
which were obtained from 2-nitrophenols in three steps, with borane dimethyl sulfide
complex in THF, a Smiles rearrangement was observed as well leading to 2-methyl-1-phenylaminopropan-2-ols.
Both approaches give access to valuable 2-nitro substituted aniline derivatives.
Smiles rearrangement - reduction - amide - amine - borane/dimethyl sulfide complex
