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Publication of BE568641ApublicationCriticalpatent/BE568641A/xx
C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
C07D307/34—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
C07D307/38—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with substituted hydrocarbon radicals attached to ring carbon atoms
C07D307/40—Radicals substituted by oxygen atoms
C07D307/46—Doubly bound oxygen atoms, or two oxygen atoms singly bound to the same carbon atom
C07D307/48—Furfural
C07D307/50—Preparation from natural products
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Agricultural Chemicals And Associated Chemicals
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