Synthesis, Characterization, and Reactivity of Cationic Gold Diarylallenylidene Complexes.

Published

Journal Article

Methoxide abstraction from gold acetylide complexes of the form (L)Au[η1 -C≡CC(OMe)ArAr'] (L=IPr, P(t Bu)2 (ortho-biphenyl); Ar/Ar'=C6 H4 X where X=H, Cl, Me, OMe) with trimethylsilyl trifluoromethanesulfonate (TMSOTf) at -78 °C resulted in the formation of the corresponding cationic gold diarylallenylidene complexes [(L)Au=C=C=CArAr']+  OTf- in ≥85±5 % yield according to 1 H NMR analysis. 13 C NMR and IR spectroscopic analysis of these complexes established the arene-dependent delocalization of positive charge on both the C1 and C3 allenylidene carbon atoms. The diphenylallenylidene complex [(IPr)Au=C=C=CPh2 ]+  OTf- reacted with heteroatom nucleophiles at the allenylidene C1 and/or C3 carbon atom.

Full Text

Duke Authors

Cited Authors

  • Kim, N; Widenhoefer, RA

Published Date

  • April 2018

Published In

Volume / Issue

  • 57 / 17

Start / End Page

  • 4722 - 4726

PubMed ID

  • 29498465

Pubmed Central ID

  • 29498465

Electronic International Standard Serial Number (EISSN)

  • 1521-3773

International Standard Serial Number (ISSN)

  • 1433-7851

Digital Object Identifier (DOI)

  • 10.1002/anie.201713209

Language

  • eng