Seven-membered Pd(II) complexes containing symmetric phosphorus ylides: Synthesis, characterization and high catalytic activity toward Suzuki cross-coupling reactions

A palladium–phosphine catalytic system as an active and recycable precatalyst for Suzuki coupling in water

“…Bulky electron-rich phosphine ligands are prominent in the palladium-catalyzed Suzuki cross-coupling reaction, due to their superior donor capability and stabilization effects [9][10][11][12]. In recent years, various palladium-phosphine catalysts have been developed for efficient cross-coupling reactions [13][14][15][16][17][18][19][20], but most of the known systems give sub-optimal results for the Suzuki coupling of less reactive aryl halides. Furthermore, a high loading of catalyst and an inert atmosphere in most reactions, especially those involving phospha-palladacycles, are generally required to achieve high conversions [21].…”

Pd(II) and Pt(II) Metallacycles with Unsymmetrical Ylide: Antiproliferative Effects and Application in Electrocatalytic Oxidation of Methanol

“…δ=28.33 and 39.1 ppm, which is assigned to PPh 2 ( P a ) and PCH ( P b ), respectively (Figure ). The 31 P{ 1 H} NMR spectrum of platinacycle 2 displays two doublet peaks at around δ=6.47 along with two satellite peaks due to 195 Pt– 31 P coupling and 43.56 ppm, which is assigned to PPh 2 ( P a ) and PCH ( P b ), respectively (Figure ) . The 31 P { 1 H} NMR spectrum of palladacycles 3 shows two doublet peaks in area δ=22.93 and 30.68 ppm, which is assigned to PPh 2 ( P a ) and PCH ( P b ), respectively.…”

“…This bonding feature renders phosphorus ylides into attractive reagents for organic synthesis Phosphorus‐ylide complexes, due to their different oxidation states, can be used as catalyst in various reactions, for example, the hydrogenation of olefins, polymerization of acetylenes and the Suzuki reaction of various aryl halides . Due to the effect of the catalyst in electro‐reduction and electro‐oxidation reaction efficiency, the role of the catalyst can be considered key for the electro‐oxidation of methanol in fuel cells .…”

Phosphonium salts and P-ylides

“…297 The preparation of seven-membered Pd(II) complexes bearing symmetric bidentate phosphorus ylides was also remarkable. 298 Other metals such as mercury(II) 299,300 and copper(I) were investigated for the synthesis of similar complexes. 301 The antimicrobial activity of these compounds was also evaluated.…”