Three-component synthesis of new o -hydroxyphenyl-substituted pyrazolo[3,4- b ]pyridines promoted by FeCl 3

Three-component synthesis of new o -hydroxyphenyl-substituted pyrazolo[3,4- b ]pyridines promoted by FeCl 3

An efficient three-component synthesis of o -hydroxyphenyl-substituted pyrazolo[3,4- b ]pyridines from substituted salicylic aldehydes, β -keto esters and 5-aminopyrazoles in the presence of FeCl 3 is presented. Newly synthesized compounds were fully characterized by means of 1 H NMR, 13 C NMR, IR,...

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Veröffentlicht in:Heterocyclic communications 2016-04, Vol.22 (2), p.63-67
Hauptverfasser: Fan, Ling, Yao, Chaochao, Shu, Miaomiao
Format: Artikel
Sprache:eng
Schlagworte:
Chemical engineering
Chemical synthesis
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Zusammenfassung:An efficient three-component synthesis of o -hydroxyphenyl-substituted pyrazolo[3,4- b ]pyridines from substituted salicylic aldehydes, β -keto esters and 5-aminopyrazoles in the presence of FeCl 3 is presented. Newly synthesized compounds were fully characterized by means of 1 H NMR, 13 C NMR, IR, HRMS and elemental analysis.
ISSN:0793-0283
2191-0197
DOI:10.1515/hc-2015-0234