asymmetric cycloisomerization of 1,7-enynes is regarded as a formidable challenge due to the poor ability of 1,7-enynes to serve as bidentate ligands to metal. In this Letter, a highly enantioselective rhodium(I)-catalyzed Alder-ene-type cycloisomerization of 1,7-enynes is disclosed, offering an efficient method for the synthesis of a wide range of fused six-membered cyclic compounds. Furthermore, a high
由于 1,7-烯炔作为
金属双齿
配体的能力差,过渡
金属催化的 1,7-烯炔不对称环异构化被认为是一项艰巨的挑战。在这封信中,公开了一种高度对映选择性的
铑 (I) 催化的 1,7-烯炔的 Alder-ene 型环异构化,为合成各种稠合六元环状化合物提供了一种有效的方法。此外,还进行了高周转频率实验和
氘标记实验,以深入了解这种转变。