component reaction of 2‐aminobenzothiazoles with aromatic aldehydes and cyclic β‐diketones in aqueous medium. The process involves hetero‐Diels–Alder cycloaddition and provides facile access to spiroheterocycles fused with potentially interesting biologically active scaffolds. The configuration of hetero‐Diels–Alder cycloadduct has been ascertained through density functional theory calculations.
结构多样的螺杂环 螺[ pyrimido [ 2,1- b ]
苯并噻唑-3,3'-色烯] -2',4'-二酮,螺[
嘧啶[ 2,1- b ]
苯并噻唑-3,5'-
嘧啶] -2' ,4',6'-三酮和螺[ pyrimido [ 2,1- b ]
苯并噻唑-3,2'-
环己烷] -1',3'-二酮是通过对环境无害,有效且
水性介质中
2-氨基苯并噻唑与芳族醛和环状
β-二酮的简单一锅假四组分反应。该过程涉及杂-Diels-Alder环加成反应,并提供了与具有潜在有趣
生物活性支架融合在一起的螺
杂环化合物的便捷通道。杂Diels-Alder环加合物的构型已通过密度泛函理论计算确定。