The silver(I)-promoted oxidative cyclization of homopropargylamines at room temperature provides a novel access to pyrroles. Homopropargylamines are readily available by the addition of a propargyl Grignard reagent to Schiff bases.
The silver(I)-promoted oxidative cyclisation of 1-propargyl-substituted tetrahydroisoquinolines affords pyrrolo[2,1-a]isoquinolines. Scope and limitations of this method are described and an application to the synthesis of the natural product (±)-crispine A is presented.
1-炔丙基取代的四氢异喹啉经银(I)促进的氧化环化反应可得到吡咯并[2,1- a ]异喹啉。描述了该方法的范围和局限性,并提出了在天然产物(±)-crispine A合成中的应用。