Pyrido[2,3-e]1,3,4-Oxadiazines heterocyclic ring system and its derivatives were efficiently synthesized via benign and sustainable methodology using Grinding Chemistry as a recognized solvent free, less hazard, and low risk pathway. The course of the reaction was completed by refluxing using ecofriendly and renewable source of initiation energy via means of parabolic solar reflectors. The implemented parabolic solar reflectors employed the direct sunlight as a clean and sustainable source of activation energy to activate the required chemical reaction. The green context of the procedure was evaluated and discussed by comparing its benign components with the non-green components of the conventional one. The green components of the green procedures were found virtually preferred over the conventional one with its simplicity, time efficiency, atom economy, safety, sustainability, low cost, yield optimization, excellent conversion of the reactants and ease of applicability. The biological activity of the prepared compounds was evaluated and discussed against some bacterial strains naming, (Escherichia Coli, Pseudomonas, Serratia and Bacillus Cereus), and was found to display promising anti-bacterial results that encourage future pharmaceutical studies to quantify its potency. All the synthesized compounds were purified using glass column chromatography packed with silica and their structures were identified and confirmed by elemental analysis and Mass spectra, 1 HNMR, 13 CNMR spectral data.
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