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Bayer AG
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Bayer AG
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Publication of FR1172024ApublicationCriticalpatent/FR1172024A/fr
C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
C07D311/04—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring
C07D311/42—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms in positions 2 and 4
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Organic Chemistry
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FR1172024D1955-09-071956-09-05Procédé de production de 4-hydroxycoumarines
ExpiredFR1172024A
(fr)