title: Electrophilic substitution reactions of metallabenzynes.
abstract: The electrophilic substitution reactions of metallabenzynes Os(≡CC(R)═C(CH(3))C(R)═CH)Cl(2)(PPh(3))(2) (R = SiMe(3), H) were studied. These metallabenzynes react with electrophilic reagents, including Br(2), NO(2)BF(4), NOBF(4), HCl/H(2)O(2), and AlCl(3)/H(2)O(2) to afford the corresponding bromination, nitration, nitrosation, and chlorination products. The reactions usually occur at the C2 and C4 positions of the metallacycle. These observations support the notion that metallabenzynes exhibit aromatic properties.
authors: Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong.
authors: Wai Yiu
authors: WY
authors: Hung
authors: Bin
authors: B
authors: Liu
authors: Wangge
authors: W
authors: Shou
authors: Ting Bin
authors: TB
authors: Wen
authors: Chuan
authors: C
authors: Shi
authors: Herman H-Y
authors: HH
authors: Sung
authors: Ian D
authors: ID
authors: Williams
authors: Zhenyang
authors: Z
authors: Lin
authors: Guochen
authors: G
authors: Jia
mesh_terms: D008958:Models, Molecular; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D009992:Osmium / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D009942:Organometallic Compounds; D009992:Osmium