title: Easily accessible and highly tunable indolyl phosphine ligands for Suzuki-Miyaura coupling of aryl chlorides.
abstract: This study describes a new class of easily accessible indolyl phosphine ligands, prepared via an efficient protocol involving Fischer indolization from readily available phenylhydrazine and substituted acetophenones. This versatile ligand scaffold provides beneficial features, including high potential of steric and electronic tunability. The air-stable indolyl phosphines in combination with a palladium metal precursor provide highly effective catalysts for Suzuki-Miyaura coupling of unactivated aryl chlorides, and the catalyst loading down to 0.02 mol % can be achieved.
authors.affiliation: Open Laboratory of Chirotechnology of the Institute of Molecular Technology for Drug Discovery and Synthesis, and Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Kowloon, Hong Kong.
authors.forename: Chau Ming
authors.initials: CM
authors.lastname: So
authors.forename: Chak Po
authors.initials: CP
authors.lastname: Lau
authors.forename: Fuk Yee
authors.initials: FY
authors.lastname: Kwong
mesh_terms: D002384:Catalysis; D002712:Chlorides / Q000737:chemistry*; D007211:Indoles / Q000737:chemistry*; D008024:Ligands; D010165:Palladium / Q000737:chemistry; D010720:Phosphines / Q000737:chemistry*
chemical_list: D002712:Chlorides; D007211:Indoles; D008024:Ligands; D010720:Phosphines; D010165:Palladium