title: Generation and trapping reaction of an efficient 1,2-dehydrocarborane precursor, phenyl[o-(trimethylsilyl)carboranyl]iodonium acetate.
abstract: An efficient 1,2-dehydrocarborane precursor, phenyl[o-(trimethylsilyl)carboranyl]iodonium acetate, was readily prepared by reaction of [o-(trimethylsilyl)carboranyl]lithium and IPh(OAc)2. The facile 2+4 cycloaddition of with dienes such as anthracene, naphthalene, norborna-2,5-diene and 2,5-dimethylfuran gave high yields of the 1,2-dehydrocarborane adducts in the presence of a desilylating agent. The reaction of with a cyclic alkene and strained cycloalkynes afforded the adducts formed by the ene reaction and the 2+2 cycloaddition reaction. The reaction of with a bicyclopalladacycle yielded the cyclization product. The structures of compounds and were determined by single-crystal X-ray crystallography.
authors.affiliation: Department of Chemistry, Korea University, Jochiwon, Chungnam 339-700, Korea.
authors.forename: Taegweon
authors.initials: T
authors.lastname: Lee
authors.forename: Joonsang
authors.initials: J
authors.lastname: Jeon
authors.forename: Kyu Ho
authors.initials: KH
authors.lastname: Song
authors.forename: Il
authors.initials: I
authors.lastname: Jung
authors.forename: Chul
authors.initials: C
authors.lastname: Baik
authors.forename: Ki-Min
authors.initials: KM
authors.lastname: Park
authors.forename: Shim Sung
authors.initials: SS
authors.lastname: Lee
authors.forename: Sang Ook
authors.initials: SO
authors.lastname: Kang
authors.forename: Jaejung
authors.initials: J
authors.lastname: Ko