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
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Yao, Chaochao
Shu, Miaomiao
description 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.
doi_str_mv 10.1515/hc-2015-0234
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subjects Chemical engineering
Chemical synthesis
title Three-component synthesis of new o -hydroxyphenyl-substituted pyrazolo[3,4- b ]pyridines promoted by FeCl 3
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