Nickel-Catalyzed Coupling of Arylzinc Halides with Thioesters
作者:Paul H. Gehrtz、Prasad Kathe、Ivana Fleischer
DOI:10.1002/chem.201801887
日期:2018.6.21
The Pd‐catalyzed Fukuyama reaction of thioesters with organozinc reagents is a mild, functional‐group‐tolerant method for acylation chemistry. Its Ni‐catalyzed variant might be a sustainable alternative to expensive catalytic Pd sources. We investigated the reaction of S‐ethyl thioesters with aryl zinc halides with hetero‐ and homotopic Ni precatalysts and several ligands. The results show that both
Cross-Coupling of Chloro(hetero)arenes with Thiolates Employing a Ni(0)-Precatalyst
作者:Paul H. Gehrtz、Valentin Geiger、Tanno Schmidt、Laura Sršan、Ivana Fleischer
DOI:10.1021/acs.orglett.8b03476
日期:2019.1.4
aryl chlorides and in situ generated aliphatic and aromatic thiolates is described. The employed on-cycle, air-stable defined Ni precatalysts allow for transformation of a broad scope of substrates. A variety of functional groups and heterocyclic motifs as well as structurally varied thiols are tolerated at unprecedented moderate catalyst loadings and reaction temperatures. Depending on reaction conditions
Esters were synthesized from thioesters and alcohols in high yields by an electrochemical activation. Different results were obtained by the use of n-Bu4N+ I− and LiBF4 as the electrolyte.
A palladium complex derived from Pd2(dba)3 and tris(2,4,6-trimethoxyphenyl)phosphine catalyzes the addition reaction of thioesters to norbornenes, giving trans-2-acyl -3-organothionorbornanes. The trans-adducts are predominantly obtained with the acyl group at the endo-position and the organothio group at the exo-position. Aroyl and heteroaroyl thioesters as well as alkanoyl thioesters were reacted
Iron‐Catalyzed Cross‐Coupling of Thioesters and Organomanganese Reagents**
作者:Valentin Jacob Geiger、Guillaume Lefèvre、Ivana Fleischer
DOI:10.1002/chem.202202212
日期:2022.11.7
development of an iron(III)-catalyzed coupling of thioesters with aliphatic organomanganese reagents. The good functional group tolerance resulted in successful transformation of a range of thioesters, including biologically relevant compounds. The presence of accessible β-hydrogen atom in the organomanganese reagent seems crucial for an effective catalyst activation. The liberated thiolate stabilizes the