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Givaudan SA
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L Givaudan and Co SA
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Application filed by L Givaudan and Co SAfiledCriticalL Givaudan and Co SA
Application grantedgrantedCritical
Publication of FR772768ApublicationCriticalpatent/FR772768A/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
C07D311/06—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms directly attached in position 2
C07D311/08—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms directly attached in position 2 not hydrogenated in the hetero ring
C07D311/10—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms directly attached in position 2 not hydrogenated in the hetero ring unsubstituted
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Chemical & Material Sciences
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Organic Chemistry
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FR772768D1933-05-121934-05-02Procédé pour la préparation de la coumarine
ExpiredFR772768A
(fr)