title: Synthesis of annelated phospholes through intramolecular C-H activation by monovalent phosphorus.
abstract: Electrophilic terminal phosphinidene complexes [Ar-Ar-P-W(CO)5 ] (Ar-Ar: biaryl or an analogue thereof) undergo a spontaneous insertion of the phosphorus atom into the vicinal CH bonds to give annelated phospholes. Twelve examples are described, including biphenyl, thienyl, pyrrolyl, and benzofuryl groups as biaryl moieties. The activation energy of the insertion reaction is quite low (about 2 kcal mol(-1) ).
authors.affiliation: College of Chemistry and Molecular Engineering, International Phosphorus Laboratory, Joint Research Laboratory for Functional Organophosphorus Materials of Henan Province, Zhengzhou University, Zhengzhou 450001 (P.R. China); Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, Singapore 637371 (Singapore).
authors.forename: Xinda
authors.initials: X
authors.lastname: Wei
authors.forename: Zongming
authors.initials: Z
authors.lastname: Lu
authors.forename: Xu
authors.initials: X
authors.lastname: Zhao
authors.forename: Zheng
authors.initials: Z
authors.lastname: Duan
authors.forename: Francois
authors.initials: F
authors.lastname: Mathey
keywords: CH activation; biaryls; insertion; phosphinidenes; phospholes