A reagent-dependent highly chemoselective halogenation reaction of zirconacyclopentenes
Abstract
Chemoselective monobromination reactions of 2,3-dialkylzirconacyclopentenes are highly reagent dependent; NBS or Br2 give alkenyl halide selectively, whereas CCl3Br or CBr4 give homoallylic halides with a high chemoselectivity.