Three-component regioselective carboamidation of 1,3-enynes via rhodium(III)-catalyzed C-H activation.
Lingheng KongXi HanPanjie HuFen WangXingwei LiPublished in: Chemical communications (Cambridge, England) (2023)
Rhodium-catalyzed regio- and stereoselective three-component carboamidation of 1,3-enynes has been realized using indoles and dioxazolones as the functionalizing reagents. A wide range of multi-substituted skipped 1,4-dienes have been constructed in good yields and excellent stereoselectivity. The stereoselectivity is under substrate control. 1,3-Enynes bearing a relatively bulky alkyne terminus reacted with Z -selectivity. In contrast, a sterically less hindered alkyne terminus tends to predominantly give the E -configured skipped diene.