33950-46-8Relevant academic research and scientific papers
Phosphinous Acid Platinum Complex as Robust Catalyst for Oxidation: Comparison with Palladium and Mechanistic Investigations
Membrat, Romain,Vasseur, Alexandre,Martinez, Alexandre,Giordano, Laurent,Nuel, Didier
, p. 5427 - 5434 (2018/10/20)
Secondary phosphine oxides proved to be effective preligands to stabilise a hydroxy-platinum based catalyst that allows the aerobic/anaerobic oxidation of challenging substrates. Kinetic comparisons showed that this system is more efficient and stable than previously reported similar palladium-based catalysts. A neutral platinum dimer bearing bridging hydroxy ligands has been isolated and fully characterised by X-ray diffraction and its involvement in the mechanism has been evidenced by mechanistic studies.
Exploiting Carbonyl Groups to Control Intermolecular Rhodium-Catalyzed Alkene and Alkyne Hydroacylation
Coxon, Thomas J.,Fernández, Maitane,Barwick-Silk, James,McKay, Alasdair I.,Britton, Louisa E.,Weller, Andrew S.,Willis, Michael C.
supporting information, p. 10142 - 10149 (2017/08/02)
Readily available β-carbonyl-substituted aldehydes are shown to be exceptional substrates for Rh-catalyzed intermolecular alkene and alkyne hydroacylation reactions. By using cationic rhodium catalysts incorporating bisphosphine ligands, efficient and selective reactions are achieved for β-amido, β-ester, and β-keto aldehyde substrates, providing a range of synthetically useful 1,3-dicarbonyl products in excellent yields. A correspondingly broad selection of alkenes and alkynes can be employed. For alkyne substrates, the use of a catalyst incorporating the Ampaphos ligand triggers a regioselectivity switch, allowing both linear and branched isomers to be prepared with high selectivity in an efficient manner. Structural data, confirming aldehyde chelation, and a proposed mechanism are provided.
Optical enrichment in enzyme-catalyzed resolution of 1-aryl-2,2-dimethyl-1,3-propanediols
Mukherjee, Chandrani,Mohapatra, Prabhu P.,Youssef, Dani,Jha, Amitabh
, p. 1 - 6 (2017/01/10)
Novozym 435 efficiently catalyzed the chemo-, regio-, and enantioselective transesterification of 1-aryl-2,2-dimethyl-1,3-propanediols in different organic solvents with vinyl acetate as the acetyl donor at room temperature. This enzyme-catalyzed chemical
Hindered Bronsted bases as Lewis base catalysts
Tabassum, Sobia,Sereda, Oksana,Reddy, Peddiahgari Vasu Govardhana,Wilhelm, Rene
experimental part, p. 4009 - 4016 (2009/12/06)
KHMDS and KOtBu are well established as strong, hindered, non-nucleophilic Bronsted bases. However, in the present work these bases are applied as highly active Lewis base catalysts for the formal [2+2] cycloaddition of ketenes with aldehydes and imines.
Synthesis and biological activity of a-hydroxyphosphonates
Zuo, Na,He, Hong-Wu
scheme or table, p. 621 - 622 (2009/04/05)
Ten α-hydroxyphosphates were synthesized and the preliminary bioessay indicated that these compounds exhibited certain herbicidal activities. Copyright Taylor & Francis Group, LLC.
A novel synthesis of 2,5-disubstituted 1,3,4-oxadiazolines by the regioselective cyclization of 1,4-disubstituted thiosemicarbazides
Feng, Dexin,Huang, You,Chen, Ruyu,Yu, Yaqin,Song, Haibin
, p. 1779 - 1784 (2008/02/10)
A novel and efficient route for the regioselective synthesis of 5-aryl-2-[(4-aryl-2-oxo-1,3,2-dioxaphosphinan-2-yl)imino]-2,3-dihydro-1,3, 4-oxadiazoles in high yield and purity by the desulfurization and cyclization of 1-benzoyl-4-[(4-aryl-2-oxo-1,3,2-di
Asymmetric cyclic phosphorothonamides containing substituted pyridine
Shi, De-Qing,Feras, Abudhaim,Liu, Yi
, p. 2663 - 2673 (2007/10/03)
In order to find high-acitivity and low-toxicity pesticidal lead compounds, a type of novel, asymmetric cyclic phosphorothonamides containing substituted pyridine were synthesized via the condensation reactions of 2-chloro-4- substitutedphenyl-5,5-dimethy
Phosphorus-derived chiral auxiliaries for α-alkylation of secondary amines by anodic oxidation
Sierecki, Emma,Turcaud, Serge,Martens, Thierry,Royer, Jacques
, p. 3199 - 3208 (2008/09/17)
Chiral phosphorus-based structures were investigated as N-activating groups for anodic oxidation and as chiral inductors. This first study presents the results obtained for pyrrolidine, with allyltrimethylsilane as a standard nucleophile. The methoxylated
Lithium acetate-catalyzed crossed aldol reaction between aldehydes and trimethylsilyl enolates generated from other aldehydes
Kawano, Yoshikazu,Fujisawa, Hidehiko,Mukaiyama, Teruaki
, p. 614 - 615 (2007/10/03)
Crossed aldol reaction between aromatic aldehydes having an electron-withdrawing group and trimethylsilyl enolates generated from several aldehydes proceeded smoothly in dry or water-containing DMF in the presence of a catalytic amount of a Lewis base such as lithium acetate or lithium benzoate. Successive reduction of the produced aldehydes with sodium borohydride (NaBH4) afforded the corresponding 1,3-diols in good to high yields in one-pot. Copyright
Synthesis and biological activity of cis 2-(6-chloropyridine-3-yl) methylamino-4-substitutedphenyl-5,5-dimethyl-1,3,2-dioxaphosphinane 2-oxides
De, Qing Shi,Liu, Yi,Feras,Xiao, Song Tan,Jian, Xin Chen
, p. 1937 - 1946 (2007/10/03)
A series of novel, asymmetric-cyclic phosphoramides containing substituted pyridine were synthesized via the condensation reactions of trans 2-chloro-4-substitutedphenyl-5, 5-dimethyl-1,3,2-dioxaphosphinane 2-oxide with 2-chloro-5-aminomethylpyridine or 3
