Ultrasound Assisted the Synthesis of 1,3-Dioxolane Derivatives from the Reaction of Epoxides or 1,2-Diols with Various Ketones Using Graphene Oxide Catalyst

Ultrasound irradiation in heterocycle synthesis: An overview

“…Mirza‐Aghayan et al developed two different protocols for the synthesis of dioxolone using graphene oxide (GO) as a catalyst [28]. Method A involves the reaction of epoxide with ketone, while method B depicts the reaction of 1,2‐diols with ketone (Scheme 10).…”

An efficient CuO/rGO/TiO2photocatalyst for the synthesis of benzopyranopyrimidine compounds under visible light irradiation

“…In continuation of our investigation of heterogeneous catalysis 39 and due to the practical importance of photocatalysis, 40 in this paper, we describe the synthesis of a CuO/rGO/TiO 2 photocatalyst using an easy method (Scheme 1). The nanocomposite was fully characterized using various techniques and successfully applied for the photocatalytic synthesis of benzopyranopyrimidine derivatives in good yields under visible light irradiation.…”

Functionalized reduced graphene oxide as a useful and efficient base catalyst for the preparation of 4H‐pyran and pyran‐like tacrine compounds and their antibacterial activity

“…In continuation of our investigations in heterogeneous catalysis [36,[42][43][44][45][46] and the preparation of heterocyclic products [47][48][49][50][51], we describe herein the application of MCR for the preparation of 4H-pyran compounds (1a-t and 2a) using an eco-friendly diethylenetriamine-functionalized reduced GO (rGO-DETA) catalyst as a solid base material in water media under mild conditions (Scheme 1). The reaction of 4Hpyran compounds with cyclohexanone gave high yields of the corresponding pyran-like tacrine derivatives 3f and 3h.…”