Green synthesis of bis pyrazole-triazole and azo-linked triazole hybrids using an efficient and novel cobalt nanocatalyst

• Published in: Reaction kinetics, mechanisms and catalysis Vol. 134; no. 1; pp. 385 - 400
• Main Authors: Rezaei, Iman, Mamaghani, Manouchehr
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.10.2021
• Subjects: Catalysis; Chemistry; Chemistry and Materials Science; Industrial Chemistry/Chemical Engineering; Physical Chemistry; Triazole; Nanocatalyst; γ-Fe; Azo; Green synthesis; @FAp@Co; Pyrazole; O
• ISSN: 1878-5190; 1878-5204
• DOI: 10.1007/s11144-021-02076-8

In the current work, new cobalt incorporated fluorapatite encapsulated iron oxide nanocatalyst (γ-Fe 2 O 3 @FAp@Co) was prepared and characterized by using FT-IR, XRD, SEM, TEM, VSM, and EDX techniques. The catalyst was utilized in the synthesis of novel derivatives of symmetric bis-triazoles by the reaction of various aldehydes and butane-1,4-diyl bis(hydrazinecarbimidothioate) in ethanol at room temperature. γ-Fe 2 O 3 @FAp@Co was easily removed from the reaction mixture using an external magnet and was used several times without decreased catalytic properties. This method provided a novel approach for the green synthesis of bis-triazoles in excellent yield (88–95%) and reasonable reaction time (60–80 min). The structures of prepared compounds were confirmed by analytical methods.