Gold(I) Complexes with Ferrocenylphosphino Sulfonate Ligands: Synthesis and Application in the Catalytic Addition of Carboxylic Acids to Internal Alkynes in Water

Content Provider	Semantic Scholar
Author	Francos, Javier Moreno-Narváez, María Esther Cadierno, Victorio Sierra, Diego Aristizabal Ariz, Katherine Gómez, Johana
Copyright Year	2019
Abstract	The synthesis and characterization of novel gold(I) complexes containing hydrophilic ferrocenylphosphino sulfonate ligands, i.e., compounds [AuCl{(η-C5H3PR2(SO3Pr))Fe(η-C5H5)}] (R = Ph (2a), p-Tol (2b), Cy (2c)), are presented, including a single-crystal X-ray diffraction study on 2a. Complexes 2a–c were checked as catalysts for the intermolecular addition of carboxylic acids to nonactivated internal alkynes using water as a green reaction medium. The best results in terms of activity were obtained with 2a in combination with AgOAc, which was able to promote the selective anti addition of a variety of aromatic, aliphatic, and α,β-unsaturated carboxylic acids to both symmetrical and unsymmetrical internal alkynes at 60 ◦C, employing metal loadings of only 2 mol %.
Starting Page	955
Ending Page	955
Page Count	1
File Format	PDF HTM / HTML
DOI	10.3390/catal9110955
Volume Number	9
Alternate Webpage(s)	https://res.mdpi.com/d_attachment/catalysts/catalysts-09-00955/article_deploy/catalysts-09-00955-v2.pdf
Alternate Webpage(s)	https://doi.org/10.3390/catal9110955
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article