Photoinduced Decatungstate-Catalyzed [3+2] Cycloaddition of Internal Alkynes Using Aliphatic Aldehydes as a Three-Carbon Synthon
In contrast to the prevalence of 1,3-dipolar cycloadditions, radical [3+2] annulations of alkynes are underexplored. Here, the authors describe [3+2] cycloadditions of various internal alkynes with readily accessible aliphatic aldehydes via photoinduced decatungstate catalysis.
