[1,3]oxazines: green synthesis by sonication using a magnetically-separable basic nano-catalyst and investigation of its activity against the toxic effect of a pesticide on the morphology of blood cells

A redox active organodiselenide as an efficacious catalyst for the synthesis of oxygen-containing heterocyclic compounds

“…As a continuation of our previous research 37–42 on the development of green synthetic methodologies for multicomponent reactions, we report herein a synthetic approach towards a three-component reaction comprising of aryl aldehydes, malononitrile and dimedone/1,3-cyclohexanedione that is carried out in a water–ethanol (3 : 1) medium. The reaction was facilitated by ultrasound in the presence of DSePA as a catalyst (Scheme 1).…”

Synthesis of new coumarin[1,3]oxazine derivatives of 7‐hydroxy‐6‐isobornyl‐4‐methylcoumarin and their antioxidant activity

“…The interest of researchers to the chemistry of 1,3‐oxazine derivatives is constantly increasing, which is associated with a wide range of biological activities, such as anticancer, anti‐inflammatory, antiviral, antifungal, and antiparasitic (Carramiñana et al, 2020; Chanu et al, 2020; Mbaba et al, 2021; Nongrum et al, 2019; Zhang et al, 2016, 2017). A detailed review on the synthesis of oxazine derivatives and their pharmaceutical and biological activities was recently published (Zinad et al, 2020).…”