[1,3]-metal shifts in rhenium alkynyl carbene complexes

Authors
Casey, CP Kraft, S Powell, DR
Citation
Cp. Casey et al., [1,3]-metal shifts in rhenium alkynyl carbene complexes, ORGANOMETAL, 20(13), 2001, pp. 2651-2653
Citations number
30
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
ORGANOMETALLICS
ISSN journal
02767333 → ACNP
Volume
20
Issue
13
Year of publication
2001
Pages
2651 - 2653
Database
ISI
SICI code
0276-7333(20010625)20:13<2651:[SIRAC>2.0.ZU;2-G
Abstract
The electron-withdrawing SO2CF3 substituent of Cp(CO)(2)Re=C(Tol)(C equival ent to CC6H4-p-SO2CF3) (1d) greatly accelerates rearrangement via a [1,3]-r henium shift. The [1,3]-rhenium shift is proposed to proceed via an 18-elec tron dehydrometallacyclobutadiene intermediate formed by alkyne coordinatio n concerted with an eta (5)-eta (3) CP ring slip.