Chinese Journal of Organic Chemistry, Journal Year: 2024, Volume and Issue: 44(12), P. 3784 - 3784
Published: Jan. 1, 2024
Language: Английский
Organic Letters, Journal Year: 2024, Volume and Issue: 26(11), P. 2287 - 2291
Published: March 8, 2024
A simple and efficient Rh2(OAc)4/DPPM (bis(diphenylphosphanyl)methane) catalyzed regioselective 1,2-anti-Markovnikov hydrosilylation of conjugated dienes with various tertiary silanes gave homoallylic in acetonitrile, which tolerate broad functional groups. Control experiments proved that no π-allyl transition metal intermediates were involved this hydrosilylation. Dirhodium hydride species was observed hydrosilylation, suggesting a direct insertion the terminal double bond into Rh–H is reaction.
Language: Английский
Citations
9
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(38)
Published: June 18, 2024
Described herein is a dirhodium(II)-catalyzed silylation of propargyl esters with hydrosilanes, using tertiary amines as axial ligands. By adopting this strategy, range versatile and useful allenylsilanes can be achieved good yields. This reaction not only represents S
Language: Английский
Citations
5
Chemistry - A European Journal, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 1, 2025
Phosphine- or carbene-based soft ligands are customarily used in Rh and other late transition metal catalyzed alkene alkyne hydrosilylation hydrogenation. We report here an aziridine a 2-pyrrolidone with pyridyl sidearms, whose cationic Rh(I) complexes prove as excellent catalysts for hydrosilylating terminal olefins by Et3SiH giving anti-Markovnikov products selectively. To the best of our knowledge, [(2-pyrrolidone)-Rh]+ seems to be most active catalyst recording highest TOF 24000 h-1. It works remarkably (TOF: 714 h-1) even at 10 ppm concentration! Terminal alkynes hydrosilylated too give β-(Z)-vinylsilanes Both also hydrogenate alkenes doubly-hydrogenate alkynes, both internal, under ambient benchtop conditions. But hydrogenation, [(aziridine)-Rh]+ better. air-stable.
Language: Английский
Citations
0
ChemistrySelect, Journal Year: 2025, Volume and Issue: 10(18)
Published: May 1, 2025
Abstract Hydrosilylation reactions are pivotal in silicon chemistry, facilitating the incorporation of hydride derivatives into carbon–carbon multiple bonds. This process is essential for synthesizing organosilicon compounds, which have widespread applications various industries, including polymer science and pharmaceuticals. review aims to critically evaluate recent advancements Pt Rh catalysts hydrosilylation (reactions between alkene derivatives, alkyne carbonyl with silanes), focusing on their catalytic efficiencies, selectivities, innovative methodologies employed enhance performance from 2020 2024. The encompasses catalyst systems, homogeneous heterogeneous catalysts, single‐atom hybrid materials, highlighting progress, limitations, recyclability.
Language: Английский
Citations
0
Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)
Published: May 14, 2025
Language: Английский
Citations
0
Chemistry - A European Journal, Journal Year: 2024, Volume and Issue: 30(64)
Published: Aug. 27, 2024
A concise hydrosilylation of alkynes for synthesizing β-(E)-vinylsilanes catalyzed by dirhodium(II)/XantPhos has been developed. In this reaction, were generated from the isomerization β-(Z)-vinylsilanes dirhodium(II) hydride species rather than direct insertion triple bond into M-H or M-Si (traditional Chalk-Harrod mechanism modified mechanism). The displayed a broad substrate scope and tertiary silanes, tolerating diverse functional groups including halides, nitriles, amines, esters, heterocycles.
Language: Английский
Citations
3
Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(38)
Published: June 18, 2024
Abstract Described herein is a dirhodium(II)‐catalyzed silylation of propargyl esters with hydrosilanes, using tertiary amines as axial ligands. By adopting this strategy, range versatile and useful allenylsilanes can be achieved good yields. This reaction not only represents S N 2′‐type the derivatives bearing terminal alkyne moiety to synthesize from simple but also new application dirhodium(II) complexes in catalytic transformation carbon‐carbon triple bond. The highly functionalized that are produced transformed into series synthetically organic molecules. In reaction, an intriguing ON‐OFF effect amine ligand was observed. almost did occur ( OFF ) without addition Lewis base ligand. However, took place smoothly ON after amount Detailed mechanistic studies density functional theory (DFT) calculations indicate reactivity delicately improved by use amine. fine‐tuning crucial formation Rh−Si species via concerted metalation deprotonation (CMD) mechanism facilitating β‐ oxygen elimination.
Language: Английский
Citations
0
The Chemical Record, Journal Year: 2024, Volume and Issue: 24(9)
Published: Aug. 20, 2024
Catalysis has been at the forefront of developments that revolutionised synthesis and provided impetus in discovery platform technologies for efficient C-C or C-X bond formation. Current environmental situation however, demands a change strategy with catalysis being promoted more solvents are benign (Water) development hydrophilic ligands (especially phosphines) is necessity which could promote catalytic reactions water, allow recyclability solutions make it possible to isolate products using column-free techniques involve lesser usage hazardous organic solvents. In this review, we therefore critically analyse such processes providing examples do follow above-mentioned parameter.
Language: Английский
Citations
0
Molecular Catalysis, Journal Year: 2024, Volume and Issue: 569, P. 114645 - 114645
Published: Oct. 31, 2024
Language: Английский
Citations
0
Chinese Journal of Organic Chemistry, Journal Year: 2024, Volume and Issue: 44(12), P. 3784 - 3784
Published: Jan. 1, 2024
Language: Английский
Citations
0