Aryl and heteroaryl nosylates as stable and cheap partners for Suzuki–Miyaura cross-coupling reactions
作者:Anna Dikova、Nicolas P. Cheval、Aurélien Blanc、Jean-Marc Weibel、Patrick Pale
DOI:10.1016/j.tet.2016.02.061
日期:2016.4
Aryl and heteroaryl para-nitrophenylsulfonates (nosylates) have been successfully engaged for the first time in Suzuki–Miyauracross-couplingreactions with various aryl or vinylboronic acids (48–98%, 12 examples). The best catalyst/ligand combination have been determined to be 2 mol % of palladium acetate (Pd(OAc)2) and 4 mol % of 2-dicyclohexylphosphino-2′,4′,6′-triisopropylbiphenyl (XPhos) using
Suzuki–Miyaura Coupling of Aryl Nosylates with Diethanolamine Boronates
作者:Philipp Kohler、Timothé Perrin、Gabriel Schäfer
DOI:10.1055/a-2107-5307
日期:2023.10
gained popularity as substrates for Suzuki–Miyauracouplings due to their ease of handling as crystalline, bench-stable solids. Similarly, 4-nitrobenzenesulfonate esters (nosylates), derived from the parent phenols, also possess the advantage of being highly crystalline and stable. Herein, we describe the development of suitable reaction conditions for the Suzuki–Miyaura cross-coupling of DABO boronates
Hanefeld, Wolfgang; Jung, Manfred, Liebigs Annalen der Chemie, 1994, # 1, p. 59 - 64
作者:Hanefeld, Wolfgang、Jung, Manfred
DOI:——
日期:——
Selective deprotection of phenolic polysulfonates
作者:Erin E. Chapman、Richard F. Langler
DOI:10.1080/17415990903295694
日期:2010.2
Nosylates of phenols can be selectively deprotected by thiocresol anions in DMSO. Successful deprotection can be accomplished in molecules containing aryl-appended halides, ethers, aldehydes, alkanesulfonates or arylsulfonates. Nosylate deprotection is accomplished by the CS bond rupture which is believed to proceed by nucleophilic aromatic substitution.
Mild and Efficient Nickel-Catalyzed Heck Reactions with Electron-Rich Olefins
作者:Thomas M. Gøgsig、Jonatan Kleimark、Sten O. Nilsson Lill、Signe Korsager、Anders T. Lindhardt、Per-Ola Norrby、Troels Skrydstrup
DOI:10.1021/ja2084509
日期:2012.1.11
A new efficient protocol for the nickel-catalyzed Heckreaction of aryl triflates with vinyl ethers is presented. Mild reaction conditions that equal those of the corresponding palladium-catalyzed Heckreaction are applied, representing a practical and more sustainable alternative to the conventional regioselective arylation of vinyl ethers. A catalytic system comprised of Ni(COD)(2) and 1,1'-bis(