In this research, AgBr supported on an ionic gelation-based nanomaterial, was developed through the aqueous coprecipitation approach for the dendritic fibrous nanosilica (DFNS) production.
Co-immobilization of Laccase and TEMPO onto Glycidyloxypropyl Functionalized Fibrous Phosphosilicate Nanoparticles for Fixing CO2 into β-Oxopropylcarbamatesin
e-1oxyl radical into the nanospaces a fibre of phosphosilicate with laccase compound causes an unheard potent to be producing which called bifunctional nanocatalyst (TEMPO@FPS-laccase). TEMPO@FPS-laccase indicated proper catalytic activity for synthesis of β-oxopropylcarbamates in aqueous medium without any pollutants through a multi component coupling of CO2, amines and propargylalcohols in moderate
TEMPO 或将 2,2,6,6-四甲基哌啶-1氧基自由基锚定到纳米空间中,磷硅酸盐纤维与漆酶化合物会产生一种闻所未闻的强效物质,称为双功能纳米催化剂(TEMPO@FPS-漆酶)。TEMPO@FPS-漆酶在温和条件下通过CO2、胺和炔丙醇的多组分偶联,在没有任何污染物的水性介质中显示出适当的催化合成β-氧代丙基氨基甲酸酯的活性。游离漆酶可能无法回收,但可以在不同环境条件下轻松失效。酶固定化被称为增强对极端条件的抵抗力和稳定性以及漆酶回收的扩展方式。
Iron complexes of 1,1′-bis(diphenylphosphino)ferrocene (BPPF) as efficient catalysts in the synthesis of carbamates. X-ray crystal structure of (BPPF)Fe(CO)3
作者:Tae-Jeong Kim、Kee-Ha Kwon、Soon-Chul Kwon、Jin-Ook Baeg、Sang-Chul Shim、Dong-Ho Lee
DOI:10.1016/0022-328x(90)85412-r
日期:1990.6
1,1′-Bis(diphenylphosphino)ferrocene (BPPF) reacts with a 5–10 molar excess of Fe(CO)5 to give three new iron complexes (η2-BPPF)Fe(CO)3 (1), (η1-BPPF)Fe(CO)4 (2), and (μ,η1-BPPF)Fe2(CO)8 (3) with the product distribution depending upon reaction conditions. The structure of 1 has been determined. Crystals are monoclinic, space group P21/c, with a 9.708(1), b 16.195(2), c 19.869(5) Å, β 95.75(2)°, V