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Number: 549/260
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Heterocyclic carbon compounds containing a hetero ring having chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) or nitrogen as the only ring hetero atoms (class 540, subclass 1) > Oxygen containing hetero ring (e.g., dioxirane, etc.) > Cyclic anhydrides (i.e., -c(=x)oc(=x)-, wherein the x's are the same or diverse chalcogens, is part of the hetero ring) > The cyclic anhydride is five-membered (e.g., succinic anhydride, etc.) > Preparing by oxidation > Of acyclic or alicyclic hydrocarbon > Vanadium and phosphorus, in compound or elemental form, utilized > Additional heavy metal, other than titanium, utilized
Description: Processes wherein, in addition to vanadium and phosphorous, a further heavy metal, other than titanium, is utilized.










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