Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1995-10-12
1998-10-06
Rotman, Alan L.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
546301, 546302, 546303, C07D21172, C07D21364
Patent
active
058178252
ABSTRACT:
A process for the preparation of 1-hydroxy-2-pyridones is described in which a pyrone is reacted with a hydroxyl-ammonium salt in the presence of basic compounds, solvents and organic acids or salts thereof.
REFERENCES:
patent: 3972888 (1976-08-01), Lohaus et al.
patent: 4797409 (1989-01-01), Lohaus et al.
patent: 4916228 (1990-04-01), Reuschling et al.
Linkies Adolf Heinz
Peyman Anuschirwan
Reuschling Dieter Bernd
Dahlen Garth M.
Hoechst Aktiengesellschaft
Rotman Alan L.
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