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Laroche Navarron SA
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Laroche Navarron SA
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Application filed by Laroche Navarron SAfiledCriticalLaroche Navarron SA
Priority to FR766283ApriorityCriticalpatent/FR1288710A/fr
Application grantedgrantedCritical
Publication of FR1288710ApublicationCriticalpatent/FR1288710A/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
C07D311/22—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms directly attached in position 4
C07D311/24—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms directly attached in position 4 with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached in position 2
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Organic Chemistry
(AREA)
FR766283A1958-05-231958-05-23Procédé de préparation d'acides chromone-2-carboxyliques
ExpiredFR1288710A
(fr)