A rhodium‐catalyzed direct alkenylation of 1‐(methylthio)naphthalene has been developed using a thioether directing group. The reaction proceeds selectively at the peri‐position of the naphthalene ring with no competing ortho C−H activation. Both alkynes and alkenes can be used as the coupling counterparts. The alkenylated products with alkynes can be converted to benzo[de]thiochromenes by an iodine mediated cyclization method.

中文翻译：

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铑催化的1-（甲硫基）萘的亚烷基选择性直接烯基化

使用硫醚导向基团开发了铑催化的1-（甲硫基）萘的直接烯基化反应。该反应在萘环的周边位置选择性地进行，而没有竞争性的邻位CH活化。炔烃和烯烃都可以用作偶联对应物。可以通过碘介导的环化方法将带有炔的烯基化产物转化为苯并[ de ]硫代色酮。