title: Platinum(II)-catalyzed intramolecular cyclization of o-substituted aryl alkynes through sp3 C-H activation.
abstract: Ring leader: PtCl(2) catalyzes intramolecular cyclization of o-isopropyl or o-benzyl aryl alkynes to give substituted indene derivatives with good yields and high selectivity. This reaction appears to proceed through an sp(3) C-H activation and 1,4-hydrogen migration pathway (see scheme).
authors.affiliation: Department of Chemistry, University of Chicago, 929 East 57th Street, Chicago, IL 60637, USA.
authors.forename: Shangdong
authors.initials: S
authors.lastname: Yang
authors.forename: Zigang
authors.initials: Z
authors.lastname: Li
authors.forename: Xing
authors.initials: X
authors.lastname: Jian
authors.forename: Chuan
authors.initials: C
authors.lastname: He
mesh_terms: D000480:Alkynes / Q000737:chemistry*; D002244:Carbon / Q000737:chemistry; D002384:Catalysis; D003500:Cyclization; D006859:Hydrogen / Q000737:chemistry; D007192:Indenes / Q000138:chemical synthesis*; D010984:Platinum / Q000737:chemistry*
chemical_list: D000480:Alkynes; D007192:Indenes; D010984:Platinum; D002244:Carbon; D006859:Hydrogen