C-H insertion. By employing chiral diphenylethylene diamine (dpen) as ligands bearing electron-withdrawing arylsulfonyl substituents, the reactions occur with remarkable chemo- and enantioselectivities; the competing Curtius-type rearrangement was largely suppressed. Enantioselective nitreneinsertion to allylic/propargylic C-H bonds was also achieved with remarkable tolerance to the C═C and C≡C bonds
peptide C―H amidation reaction and the unprecedented late-stagepeptidediversification on tryptophan C7 position in a highly site-selective manner. Moreover, this strategy sets the stage for sequential double C(7)―H/C(2)―H modifications, further improving the peptide structural complexity.
A new class of chiralruthenium catalysts is introduced in which ruthenium is cyclometalated by two 7-methyl-1,7-phenanthrolinium heterocycles, resulting in chelating pyridylidene remote N-heterocycliccarbene ligands (rNHCs). The overall chirality results from a stereogenic metal center featuring either a Λ or Δ absolute configuration. This work features the importance of the relative metal-centered
site-selectivity is highly desirable especially in C-H functionalization reactions. We report a new catalyst platform that is highlyselective for the amidation of benzylic C-H bonds controlled by π-π interactions in the secondary coordination sphere. Mechanistic understanding of the previously developed iridium catalysts that showed poor regioselectivity gave rise to the recognition that the π-cloud
Metal complex, method for producing same, and method for producing gamma-lactam compound using same
申请人:INSTITUTE FOR BASIC SCIENCE
公开号:US11344872B2
公开(公告)日:2022-05-31
The present invention relates to a novel metal complex, a method for producing same, and a method for producing a gamma-lactam compound using same, and the metal complex according to the present invention is used as a catalyst for producing a gamma-lactam compound and can efficiently produce a gamma-lactam compound with an excellent yield and excellent selectivity.