Affiliation:
1. Institut de Chimie Organique et Analytique (ICOA), Université d’Orléans UMR-CNRS 7311
2. Departmento/Centro de Química, Escola de Ciências, Universidade do Minho
Abstract
New pyrazino[2′,3′:4,5]thieno[2,3-e][1,2,3]triazolo[1,5-a]-pyrimidin-5(4H)-ones were synthesized in an efficient, fast, and mild one-pot procedure from methyl 7-azidothieno[2,3-b]pyrazine-6-carboxylate. From the latter, some triazolothieno[2,3-b]pyrazine-6-carboxylates were also obtained with total regioselectivity by [2+3] cycloaddition with alkynes without any metal catalyst.
Subject
Organic Chemistry,Catalysis
Cited by
4 articles.
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1. Heterocyclic azides: advances in their chemistry;Russian Chemical Reviews;2022
2. Demonstration of Green Solvent Performance on O,S,N-Heterocycles Synthesis: Metal-Free Click Chemistry and Buchwald—Hartwig Coupling;Molecules;2021-02-18
3. One-pot approach to construct benzo[4,5]thieno[3,2-b]indoles, pyrido[3′,2’:4,5]thieno[3,2-b]indoles and pyrazino[2′,3’:4,5]thieno[3,2-b]indoles based on the Fischer indole synthesis;Tetrahedron;2020-12
4. Synthesis of Pyrimidine-Annulated Five-Membered Heterocycles: An Overview;Current Organic Chemistry;2019-12-24