N-Amination of Pyrazoles: a General Approach
- 1 January 1993
- journal article
- Published by OOO Zhurnal "Mendeleevskie Soobshcheniya" in Mendeleev Communications
- Vol. 3 (3) , 111
- https://doi.org/10.1070/mc1993v003n03abeh000247
Abstract
A general approach to N -amination of pyrazoles, allowing the synthesis of previously inaccessible N -aminopyrazoles with electron-acceptor substituents in the ring, has been proposed, consisting of treatment of the pyrazoles with hydroxylamine- O -sulfonic acid in aqueous media at controlled pH depending on p K a of the pyrazole.Keywords
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