Cp2TiCl2-Catalyzed Reductive Methylidenation of Alkyl Ketones with CH2Br2
Direct methylidenation of carbonyl compounds represents an appealing route to terminal alkenes. Existing methods for this transformation typically rely on stoichiometric phosphorus ylides (methylene Wittig) or organotitanium complexes (Tebbe or Petasis reagents). Here, we report a Cp2TiCl2-catalyzed method that uses...