Iridium‐Catalyzed Cycloisomerization of Alkynoic Acids: Synthesis of Unsaturated Lactones
作者:Yi Huang、Xianghe Zhang、Xiu‐Qin Dong、Xumu Zhang
DOI:10.1002/adsc.201901322
日期:2020.2.21
The iridium‐catalyzed cycloisomerization of various alkynoic acids was successfully developed, and a series of five‐, six‐, and especially seven‐membered unsaturated lactones were constructed with moderate yields and excellent regioselectivities (up to 68% yield, >99:1 rr). In addition, the indole compound can be easily prepared with 75% yield through this efficient synthetic methodology. Moreover
各种炔酸的铱催化环异构化成功开发,并以中等收率和优异的区域选择性(高达68%收率,> 99:1 rr)构建了一系列五,六,尤其是七元不饱和内酯。 )。另外,通过这种有效的合成方法,可以容易地以75%的产率制备吲哚化合物。此外,提出了这种Ir催化的炔酸环异构化的合理机理。