Preparation of 1,3,4-oxadiazoles and 1,3,4-thiadiazoles via chemoselective сyclocondensation of electrophilically activated nitroalkanes to (thio)semicarbazides or thiohydrazides

Unusual reaction proceeding via the electrophilic activation of nitroalkanes in the presence of polyphosphoric acid has been discovered. Subsequent nucleophilic attack with semicarbazides or thiosemicarbazides allows to access 2-amino-1,3,4-oxadiazoles and 2-amino-1,3,4-thiadiazoles, respectively

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Detaylı Bibliyografya
Asıl Yazarlar:	Aksenov, N. A., Аксенов, Н. А., Arutiunov, N. A., Арутюнов, Н. А., Kirilov, N. K., Кирилов, Н. К., Aksenov, D. A., Аксенов, Д. А., Aksenov, A. V., Аксенов, А. В., Rubin, M. A., Рубин, М. А.
Materyal Türü:	Статья
Dil:	English
Baskı/Yayın Bilgisi:	Springer 2020
Konular:	1,3,4-oxadiazoles 1,3,4-thiadiazoles Bronsted acid catalysis Cascade reaction Nitroalkanes Nucleophilic cycloadition Semicarbazides Thiosemicarbazides
Online Erişim:	https://dspace.ncfu.ru/handle/20.500.12258/14299
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https://dspace.ncfu.ru/handle/20.500.12258/14299

Preparation of 1,3,4-oxadiazoles and 1,3,4-thiadiazoles via chemoselective сyclocondensation of electrophilically activated nitroalkanes to (thio)semicarbazides or thiohydrazides

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