460731-56-0Relevant academic research and scientific papers
Gold-Catalyzed C(sp2)?C(sp) Coupling by Alkynylation through Oxidative Addition of Bromoalkynes
Yang, Yangyang,Schie?l, Jasmin,Zallouz, Sirine,G?ker, Verena,Gross, Jürgen,Rudolph, Matthias,Rominger, Frank,Hashmi, A. Stephen K.
supporting information, p. 9624 - 9628 (2019/07/05)
A gold(I)-catalyzed cascade cyclization–alkynylation of allenoates using alkynyl bromide to generate β-alkynyl-γ-butenolides was investigated. Whereas alkynyl iodides afforded significant amounts of the homo-coupling of two lactone units, alkynyl bromides led to a selective reaction, and a broad functional group tolerance was observed. Under the optimized reaction conditions, it was possible to directly synthesize a large range of β-alkynyl-γ-butenolides in moderate to good yields without the need for any external oxidant.
A general access to organogold(III) complexes by oxidative addition of diazonium salts
Huang, Long,Rominger, Frank,Rudolph, Matthias,Hashmi, A. Stephen K.
supporting information, p. 6435 - 6438 (2016/06/06)
At room temperature under mild photochemical conditions, namely irradiation with a simple blue light LED, gold(i) chloro complexes of both phosphane and carbene ligands in combination with aryldiazonium salts afford arylgold(iii) complexes. With chelating P,N-ligands cationic six- or five-membered chelate complexes were isolated in the form of salts with weakly coordinating counter anions that were brought in from the diazonium salt. With monodentate P ligands or N-heterocyclic carbene ligands and diazonium chlorides neutral arylgold(iii) dichloro complexes were obtained. The coordination geometry was determined by X-ray crystal structure analyses of representative compounds, a cis arrangement of the aryl and the phosphane ligand at the square planar gold(iii) center is observed.
Convenient Formation of Triarylphosphines by Nickel-Catalyzed C-P Cross-Coupling with Aryl Chlorides
Sun, Meng,Zang, Yu-Shi,Hou, Le-Kai,Chen, Xiang-Xiang,Sun, Wei,Yang, Shang-Dong
supporting information, p. 6796 - 6801 (2016/02/18)
A convenient strategy has been developed for the preparation of various phosphine ligands in good to excellent yields through a nickel-catalyzed C-P bond-forming step. This reaction proceeded smoothly and tolerated a variety of functional groups to provide a new method for the synthesis of important phosphine ligands through the direct cleavage of a C-Cl bond. A convenient strategy has been developed for the preparation of various phosphine ligands in good to excellent yields through a nickel-catalyzed C-P bond-forming step. This reaction proceeded smoothly and tolerated a variety of functional groups to provide a new method for the synthesis of important phosphine ligands through the direct cleavage of a C-Cl bond.
Nickel-catalyzed C-P cross-coupling by C-CN bond cleavage
Sun, Meng,Zhang, Hong-Yu,Han, Qi,Yang, Kuo,Yang, Shang-Dong
supporting information; experimental part, p. 9566 - 9570 (2011/10/05)
Prosperous coupling: A nickel-catalyzed C-P cross-coupling reaction with Me3SiPPh2 by carbon-cyano bond cleavage has been developed. This method is characterized by its simplicity and wide application to the synthesis of various monophosphorus and P,N bidentate ligands (see scheme).
