{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1361699995346995968.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1139/v67-479"}},{"identifier":{"@type":"URI","@value":"https://cdnsciencepub.com/doi/pdf/10.1139/v67-479"}}],"dc:title":[{"@value":"5-Nitro-6-substituted-2-norbornenes: determination of Diels-Alder isomer ratios from nuclear magnetic resonance spectra"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p> The nuclear magnetic resonance spectra of representative 5-nitro-6-substituted-2-norbornenes (II–VII) are described. From the spectra, ratios of the two possible endo–exo trans stereoisomers derived from the Diels–Alder reaction of cyclopentadiene with the appropriate trans nitroölefin are estimated as shown in Table II. For all cases, there was predominance (3:1 to 9:1) of the 5-endo-nitro trans stereoisomer. The synthesis of the 6-(p-nitrophenyl) (V), 6-(2-furyl) (VI), and 6-(2-thienyl) (VII) derivatives is reported and the 6-ethyl derivative (III) has been characterized </jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1381699995346995970","@type":"Researcher","foaf:name":[{"@value":"Wayland E. Noland"}]},{"@id":"https://cir.nii.ac.jp/crid/1381699995346995968","@type":"Researcher","foaf:name":[{"@value":"Bruce A. Langager"}]},{"@id":"https://cir.nii.ac.jp/crid/1381699995346995971","@type":"Researcher","foaf:name":[{"@value":"Joseph W. Manthey"}]},{"@id":"https://cir.nii.ac.jp/crid/1381699995346995969","@type":"Researcher","foaf:name":[{"@value":"Anthony G. Zacchei"}]},{"@id":"https://cir.nii.ac.jp/crid/1381699995346995973","@type":"Researcher","foaf:name":[{"@value":"Darryl L. Petrak"}]},{"@id":"https://cir.nii.ac.jp/crid/1381699995346995972","@type":"Researcher","foaf:name":[{"@value":"Gilbert L. Eian"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00084042"},{"@type":"EISSN","@value":"14803291"}],"prism:publicationName":[{"@value":"Canadian Journal of Chemistry"}],"dc:publisher":[{"@value":"Canadian Science Publishing"}],"prism:publicationDate":"1967-12-01","prism:volume":"45","prism:number":"23","prism:startingPage":"2969","prism:endingPage":"2978"},"reviewed":"false","dc:rights":["http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining"],"url":[{"@id":"https://cdnsciencepub.com/doi/pdf/10.1139/v67-479"}],"createdAt":"2006-05-03","modifiedAt":"2025-07-02","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360283694075627392","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"The Synthesis of Cyclic α-Amino Acids. II"},{"@language":"en","@value":"The synthesis of cyclic alpha-amino acids. II."}]},{"@id":"https://cir.nii.ac.jp/crid/1360565169054293632","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"α,β-Unsaturated Carboxylic Acid Derivatives. XIV. The Synthesis and Reduction of Diels-Alder Adducts from Ethyl 3-Nitro-2-alkenoates and Cyclopentadiene"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1139/v67-479"},{"@type":"CROSSREF","@value":"10.1246/bcsj.51.1137_references_DOI_V4z06hNQ4eKKEGoDz4fFedXHwid"},{"@type":"CROSSREF","@value":"10.1246/bcsj.42.194_references_DOI_V4z06hNQ4eKKEGoDz4fFedXHwid"}]}