The one-pot conversion of primary and secondary alcohols into
phenylhydrazones and 2,4-dintrophenylhydrazones is reported using chromium
trioxide supported on silica gel and phenylhydrazines or 2,4-dintrophenylhydrazines
under solvent-free conditions. This oxidation arylhydrazone formation reaction has
been applied to a range of aliphatic and benzylic alcohols.
