Synthesis of 6-Membered-Ring Fused Thiazine-Dicarboxylates and Thiazole-Pyrimidines via One-Pot Three-Component Reactions
作者:Reagan L. Mohlala、Elena Mabel Coyanis、Muhammad Q. Fish、Manuel A. Fernandes、Moira L. Bode
DOI:10.3390/molecules26185493
日期:——
A facile and efficientone-potthree-componentreactionmethod for the synthesis of thiazine-dicarboxylates is reported. Reaction of an isocyanide and dialkylacetylenedicarboxylate with 2-amino-4H-1,3-thiazin-4-one derivatives containing both an acidic proton and an internal nucleophile gave the products in good yields of 76–85%. The reactivity of dialkylacetylenedicarboxylates was further tested
报道了一种简便高效的一锅三组分反应合成噻嗪二羧酸盐的方法。异氰化物和乙炔二甲酸二烷基酯与含有酸性质子和内部亲核试剂的 2-氨基-4 H -1,3-噻嗪-4-酮衍生物反应,得到产物,收率高达 76-85%。在噻唑嘧啶的合成中进一步测试了乙炔二甲酸二烷基酯的反应性,其中2-氨基噻唑与乙炔二甲酸二烷基酯的双组分反应成功地转化为硫脲、α-卤代酮和乙炔二甲酸二烷基酯的更有效的三组分反应( DMAD/DEtAD) 得到噻唑-嘧啶,产率高达 70-91%。
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