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Utilization of ultrasonic irradiation as green and effective one-pot protocol to prepare a novel series of bis-2-amino-1,3,4-oxa(thia) diazoles and bis-tetrazoles
Stockholm University, Faculty of Science, Department of Organic Chemistry. Nuclear Material Authority, Egypt.
Number of Authors: 22017 (English)In: ARKIVOC, ISSN 1551-7004, E-ISSN 1551-7012, p. 327-340Article in journal (Refereed) Published
Abstract [en]

In an effective and straightforward conversion, bis-semicarbazones and bis-thiosemicarbazones are transformed into a diversity of novel substituted bis-2-amino-1,3,4-oxadiazoles and bis-2-amino-1,3,4-thiadiazoles, respectively under ultrasonic irradiation. Bis-tetrazoles are obtained from the dialdehydes by sequential reaction with hydroxylamine hydrochloride, phosphorus pentoxide and sodium azide without isolation of the intermediates oximes and nitriles. All the reactions proceed cleanly and smoothly under mild conditions, with short reaction times and broad functional groups possibility. No side reactions were observed. [GRAPHICS]

Place, publisher, year, edition, pages
2017. p. 327-340
Keywords [en]
Ultrasound, one-pot reaction, bis-heterocycles, dialdehydes
National Category
Organic Chemistry
Identifiers
URN: urn:nbn:se:su:diva-152683DOI: 10.24820/ark.5550190.p010.197ISI: 000418768100028OAI: oai:DiVA.org:su-152683DiVA, id: diva2:1185205
Available from: 2018-02-23 Created: 2018-02-23 Last updated: 2018-02-23Bibliographically approved

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