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Article: A selective synthesis of 3,6-dihydro-7H-1,2,3-triazolo[4,5-d]pyrimidin-7- ones

TitleA selective synthesis of 3,6-dihydro-7H-1,2,3-triazolo[4,5-d]pyrimidin-7- ones
Authors
Issue Date2005
PublisherChemical Society of Japan. The Journal's web site is located at http://www.csj.jp/journals/chem-lett/index-e.html
Citation
Chemistry Letters, 2005, v. 34 n. 7, p. 1022-1023 How to Cite?
AbstractThe carbodiimides 2, obtained from aza-Wittig reactions of iminophosphorane 1 with aromatic isocyanates, reacted with primary amine RNH2 (R ≠ H, Me) to produce isolable guanidine intermediates 3, which were further treated with sodium ethoxide in a mixed solvent to give selectivly one of the regioisomer 4 via a base catalytic cyclization mechanism. However, another regioisomers 5 were obtained directly as RNH2 (R = H, Me) were used in the absence of sodium ethoxide, via a direct cyclization mechanism. Copyright © 2005 The Chemical Society of Japan.
Persistent Identifierhttp://hdl.handle.net/10722/182326
ISSN
2015 Impact Factor: 1.55
2015 SCImago Journal Rankings: 0.612
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorZhao, JFen_US
dc.contributor.authorXie, Cen_US
dc.contributor.authorDing, MWen_US
dc.contributor.authorHe, HWen_US
dc.date.accessioned2013-04-23T08:18:54Z-
dc.date.available2013-04-23T08:18:54Z-
dc.date.issued2005en_US
dc.identifier.citationChemistry Letters, 2005, v. 34 n. 7, p. 1022-1023en_US
dc.identifier.issn0366-7022en_US
dc.identifier.urihttp://hdl.handle.net/10722/182326-
dc.description.abstractThe carbodiimides 2, obtained from aza-Wittig reactions of iminophosphorane 1 with aromatic isocyanates, reacted with primary amine RNH2 (R ≠ H, Me) to produce isolable guanidine intermediates 3, which were further treated with sodium ethoxide in a mixed solvent to give selectivly one of the regioisomer 4 via a base catalytic cyclization mechanism. However, another regioisomers 5 were obtained directly as RNH2 (R = H, Me) were used in the absence of sodium ethoxide, via a direct cyclization mechanism. Copyright © 2005 The Chemical Society of Japan.en_US
dc.languageengen_US
dc.publisherChemical Society of Japan. The Journal's web site is located at http://www.csj.jp/journals/chem-lett/index-e.htmlen_US
dc.relation.ispartofChemistry Lettersen_US
dc.titleA selective synthesis of 3,6-dihydro-7H-1,2,3-triazolo[4,5-d]pyrimidin-7- onesen_US
dc.typeArticleen_US
dc.identifier.emailZhao, JF: zhao0065@e.ntu.edu.sgen_US
dc.identifier.authorityZhao, JF=rp01745en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1246/cl.2005.1022en_US
dc.identifier.scopuseid_2-s2.0-26044470210en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-26044470210&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume34en_US
dc.identifier.issue7en_US
dc.identifier.spage1022en_US
dc.identifier.epage1023en_US
dc.identifier.isiWOS:000230551200067-
dc.publisher.placeJapanen_US
dc.identifier.scopusauthoridZhao, JF=8393022100en_US
dc.identifier.scopusauthoridXie, C=35099729800en_US
dc.identifier.scopusauthoridDing, MW=7202280967en_US
dc.identifier.scopusauthoridHe, HW=7402291797en_US

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