420118-56-5Relevant academic research and scientific papers
Synthesis, structure, and catalytic activity of palladium complexes bearing a tridentate PXP-pincer ligand of heavier group 14 element (X = Ge, Sn)
Takaya, Jun,Nakamura, Shuhei,Iwasawa, Nobuharu
supporting information, p. 967 - 969 (2012/11/07)
An efficient method for the synthesis of tridentate PGeP- and PSnP-palladium complexes is developed. Structural analysis revealed that PSiP-ligand exerts the strongest trans influence and electron donation and that PGeP- and PSnP-ligands provide wider coordination sphere around the palladium. Preliminary studies demonstrated that both PGeP- and PSnP-palladium complexes work as an efficient catalyst for reductive aldol-type reaction, indicating promising utility in synthetic organic chemistry.
Cp2ZrCl2-induced Reformatsky and Barbier reactions on isatins: An efficient synthesis of 3-substituted-3-hydroxyindolin-2-ones
Chouhan, Mangilal,Sharma, Ratnesh,Nair, Vipin A.
experimental part, p. 470 - 475 (2012/02/01)
A mild and rapid one-pot process for Reformatsky and Barbier reactions using a catalytic quantity of zirconocene dichloride (Cp2ZrCl 2) as a promoter and zinc as a terminal reductant at room temperature in dimethyl formamide was developed. The protocol has wide substrate suitability and afforded the desired 3-substituted-3-hydroxyindolin-2-ones from istains in good yields and short reaction time.
Solvent-free synthesis of β-hydroxy esters and β-amino esters by indium-mediated reformatsky reaction
Chen, Xi'an,Zhang, Changfu,Wu, Huayue,Yu, Xiaochun,Su, Weike,Cheng, Jiang
, p. 3233 - 3239 (2008/09/16)
In a convenient and efficient procedure for the solvent-free synthesis of β-hydroxy esters and β-amino esters, various aldehydes and aldimines undergo a Reformatsky reaction mediated by non-activated indium at room temperature to give the corresponding esters in good to excellent yields. Georg Thieme Verlag Stuttgart.
Enantioselective borohydride reduction catalyzed by optically active cobalt complexes
Yamada, Tohru,Nagata, Takushi,Sugi, Kiyoaki D.,Yorozu, Kiyotaka,Ikeno, Taketo,Ohtsuka, Yuhki,Miyazaki, Daichi,Mukaiyama, Teruaki
, p. 4485 - 4509 (2007/10/03)
The highly enantioselective borohydride reduction of aromatic ketones or imines to the corresponding alcohols was developed in the presence of a catalytic amount of an optically active cobalt(II) complex catalyst. This enantioselective reduction is carried out using a precisely premodified borohydride with alcohols such as tetrahydrofurfuryl alcohol, ethanol and methanol. High optical yields are obtained by choosing the appropriate alcohol as modifiers and a suitable β-ketoiminato ligand of the catalyst. The enantioselective borohydride reduction has been successfully applied to the preparation of optically active 1,3-diols, the stereoselective reduction of diacylferrocenes, and dynamic and/or kinetic resolution of 1,3-dicarbonyl compounds.
Dynamic kinetic resolution with enantioselective borohydride reduction catalyzed by optically active β-ketoiminato cobalt(II) complexes: Highly diastereo- and enantioselective preparation of optically active anti-aldol compounds
Ohtsuka, Yuhki,Miyazaki, Daichi,Ikeno, Taketo,Yamada, Tohru
, p. 24 - 25 (2007/10/03)
Optically active anti-2-alkyl-3-hydroxy esters were stereo-selectively obtained from the corresponding 2-alkyl-3-keto esters using enantioselective borohydride reduction along with dynamic kinetic resolution in the presence of optically active β-ketoimina
