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Novartis AG
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JR Geigy AG
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Publication of FR1186130ApublicationCriticalpatent/FR1186130A/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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Chemical & Material Sciences
(AREA)
Organic Chemistry
(AREA)
FR1186130D1954-08-171955-08-16Procédé de préparation de 4-hydroxy-coumarines portant un substituant en position 3
ExpiredFR1186130A
(fr)