Synlett 2015; 26(13): 1804-1807
DOI: 10.1055/s-0034-1380677
letter
© Georg Thieme Verlag Stuttgart · New York

A Novel One-Pot Method for Highly Regioselective Synthesis of Triazoloapyrimidinedicarboxylates Using Silica Sodium Carbonate

Bahador Karami*
Department of Chemistry, Yasouj University, Yasouj, Iran   eMail: karami@mail.yu.ac.ir
,
Mahnaz Farahi
Department of Chemistry, Yasouj University, Yasouj, Iran   eMail: karami@mail.yu.ac.ir
,
Zohreh Banaki
Department of Chemistry, Yasouj University, Yasouj, Iran   eMail: karami@mail.yu.ac.ir
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Publikationsverlauf

Received: 18. Februar 2015

Accepted after revision: 02. April 2015

Publikationsdatum:
08. Mai 2015 (online)


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Abstract

A novel synthesis of dimethyl 4,5-dihydro-5-aryl-[1,2,4]triazolo[1,5-a]pyrimidine-6,7-dicarboxylates is reported. This methodology consists of the one-pot condensation of 3-amino-1H-1,2,4-triazole, dimethyl acetylenedicarboxylate, and aryl aldehydes using silica sodium carbonate as a solid base catalyst. The use of silica sodium carbonate as a heterogeneous reusable catalyst makes this procedure mild, convenient, and environmentally benign.

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