PYRAN DERIVATIVE AND MANUFACTURE

For the Contracting States BE, CH, LI, DE, FR, GB, IT 1. A pyran derivative of the formula la or lb see diagramm : EP0219091,P15,F1 where R**1 is C1 -C18 -alkyl or phenyl which is unsubstituted by C1 -C4 -alkyl, C1 -C4 -alkoxy or halogen, R**2, R**3 and R**4 are each hydrogen, C1 -C6 -alkyl or pheny...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	RORUFU FUITSUSHIYAA, UORUFUGANGU SHIYUPIIGURAA, NORUBERUTO GEETSU, DEIITAA YAAN, RUDORUFU KUROTSUPU
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM CHEMISTRY HETEROCYCLIC COMPOUNDS METALLURGY ORGANIC CHEMISTRY
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