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Utilization of ultr...
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
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Arafa, Wael Abdelgayed Ahmed (author)
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- Abdel-Magied, Ahmed Fawzy (author)
- Stockholms universitet,Institutionen för organisk kemi,Nuclear Material Authority, Egypt
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(creator_code:org_t)
- 2017-11-19
- 2017
- English.
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In: ARKIVOC. - : ARKAT USA, Inc.. - 1551-7004 .- 1551-7012. ; , s. 327-340
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https://doi.org/10.2...
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Abstract
Subject headings
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- 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]
Subject headings
- NATURVETENSKAP -- Kemi -- Organisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Organic Chemistry (hsv//eng)
Keyword
- Ultrasound
- one-pot reaction
- bis-heterocycles
- dialdehydes
Publication and Content Type
- ref (subject category)
- art (subject category)
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