The first heterogeneous carbonylative Sonogashira coupling reaction catalyzed by MCM-41-supported bidentate phosphine palladium(0) complex

Palladium nanoparticles supported on Smopex® metal scavengers as catalyst for carbonylative Sonogashira reactions: Synthesis of α,β-alkynyl ketones

“…Finally, Cai and coll. [38] synthesised a bidentate phosphine palladium (0) complex anchored to the mesoporous material MCM-41 and claimed it to be the first heterogeneous catalyst for the carbonylative Sonogashira reaction. The reactions were performed in Et 3 N, at room temperature and under atmospheric pressure of carbon monoxide but a large amount of palladium (5 mol %) was necessary to achieve the products in good yields.…”

Synthesis of Fluorescent 1,3‐Diarylpropynones by Carbonylative Alkynylation Reaction Using (Phosphine) (1,2,3‐triazol‐5‐ylidene)palladium Complexes as Catalysts

“…Complex 2 was initially adsorbed onto an excess amount of silica gel (100–200 mesh; 0.025 mmol on 1 g of silica gel, 5 mol‐% Pd relative to the substrate), and the carbonylative alkynylation reaction of iodobenzene and (3‐methoxyphenyl)acetylene was carried out in toluene at 80 °C in the presence of Et 3 N (Scheme and Table ). The reaction was equally efficient on silica gel (i.e., under heterogeneous conditions) and reached completion in 18 h to give 6 in 92 % yield. These results are comparable to those of the carbonylative alkynylation reactions that were carried out under homogeneous conditions (Scheme ).…”

A novel heterogeneous nanocatalyst: 2‐Methoxy‐1‐phenylethanone functionalized MCM‐41 supported Cu(II) complex for C‐S coupling of aryl halides with thiourea

“…Up to the present time, some functionalized MCM‐41‐immobilized copper complexes have been synthesized and successfully used in different organic reactions . It was demonstrated that the stability and activity of copper‐based nanocatalysts is meaningfully enhanced after their formation on MCM‐41.…”