A Simple and Efficient Synthesis of Heterocycle-Fused 2<i>H</i>-Thiopyrans, Furo-, Benzofuro-, Thieno-, Benzothieno-, Pyrrolo- and Indolo-2<i>H</i>- thiopyrans, from Heteroaromatic Thioketones and α-Chloroacrylonitrile or α-Bromoacrylic Esters via a Hetero Diels-Alder Reaction-Dehydrohalogenation Process
作者:Takao Saito、Takuya Shizuta、Hideki Kikuchi、Junko Nakagawa、Kenji Hirotsu、Haruo Ohmura、Shinichi Motoki
DOI:10.1055/s-1994-25558
日期:——
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。