An efficient and convenient procedure is described for the synthesis of heterocycle-fused 2H-thiopyrans having ortho-dimethylene structures via a hetero Diels-Alder reaction-dehydrohalogenation process starting from heteroaromatic thioketones and α-chloro-acrylonitrile or α-bromoacrylates.
本研究介绍了一种高效便捷的方法,以杂芳族
硫酮和δ±-
氯丙烯腈或δ±-
溴丙烯酸酯为起点,通过杂环 Diels-Alder 反应-氢卤化过程合成具有正二
甲苯结构的杂环融合 2H-
硫代
吡喃。