2024
DOI: 10.1515/psr-2022-0206
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A facile and efficient one-pot 3-component reaction (3-CR) method for the synthesis of thiazine-based heterocyclic compounds using zwitterion adduct intermediates

Reagan L. Mohlala,
E. Mabel Coyanis

Abstract: Multicomponent reactions (MCRs) are considered a green strategy by generating diversity of scaffolds from less synthetic effort and safe conditions. This work present the synthesis of dimethyl 8-(tert-butylamino)-4-oxo-4,6-dihydropyrimido[2,1-b][1,3]thiazine-6,7-dicarboxylate in low to moderate yields 33–74 % from the prepared 2-amino-4H-1,3-thiazin-4-one derivatives containing both an acidic proton and a suitable nucleophile with alkyl isocyanides and DMAD/DEtAD. The work portrays facile method under green ch… Show more

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