Method for hydroxylating aromatic compounds

Details Method for hydroxylating aromatic compounds Method for hydroxylating aromatic compounds

1997-11-17

1999-06-15

Reamer, James H.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C07C 3760

Patent

active

059123915

ABSTRACT:
Aromatic compounds such as benzene, toluene and xylene are hydroxylated by reaction with oxygen and hydroquinone or a substituted hydroquinone in the presence of a vanadium compound, typically a pentavalent vanadium oxy chelate with picolinic acid or a substituted picolinic acid. The vanadium compound may be produced in situ by reaction of the chelating agent with a tetravalent or pentavalent precursor vanadium compound.

REFERENCES:
patent: 4338471 (1982-07-01), Umemura et al.
patent: 4937376 (1990-06-01), Fields et al.
patent: 5426245 (1995-06-01), Hamada et al.
Mimoun et al., "Vanadium(V) Peroxo Complexes. New Versatile Biomimetic Reagents for Epoxidation of Olefins and Hydroxylation of Alkanes and Aromatic Hydrocarbons", J. Am. Chem. Soc., 105, 3101-3110 (1983).
CEH Product Review, "Hydrogen Peroxide", SRI Internantional (1996).

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