Title
Synthesis of 5-alkyl-4-amino-2-(trifluoromethyl)pyridines and their transformation into trifluoromethylated 1H-pyrazolo[4,3-c]pyridines Synthesis of 5-alkyl-4-amino-2-(trifluoromethyl)pyridines and their transformation into trifluoromethylated 1H-pyrazolo[4,3-c]pyridines
Author
Faculty/Department
Faculty of Sciences. Chemistry
Publication type
article
Publication
Oxford ,
Subject
Chemistry
Source (journal)
Tetrahedron. - Oxford
Volume/pages
57(2001) :10 , p. 2051-2055
ISSN
0040-4020
ISI
000167313700024
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Abstract
5-Alkyl-4-amino-2-(trifluoromethyl)pyridines were prepared in good yields starting from the corresponding pyridinols either using condensation with tosyl isocyanate or by alkylation with 2-chloroacetamide and subsequent Smiles type rearrangement. The cyclisation of diazonium salts, generated from 5-alkyl-4-amino-2-(trifluoromethyl)pyridines afforded trifluoromethylated 1H-pyrazolo[4,3-c] pyri dines. (C) 2001 Elsevier Science Ltd. All rights reserved.
E-info
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