METHOD FOR PREPARING PHENYLBORONIC ACID NEOPENTYL GLYCOL ESTER

    公开(公告)号:US20200181173A1

    公开(公告)日:2020-06-11

    申请号:US16091520

    申请日:2016-04-08

    发明人: Hongmei SUN Jin XU

    摘要: The present invention discloses a method for preparing a phenylboronic acid neopentyl glycol ester. A mixed nickel(II) complex with a formula of Ni[P(OR1)3][(R2NCH2CH2NR2)C]X2 is used as a catalyst. The method comprises: in the presence of potassium methoxide, efficiently catalyze a cross coupling reaction between a phenyl chloride and a bis(neopentyl glycolato)-diboron to prepare a phenylboronic acid neopentyl glycol ester. The invention provides the first embodiment of using a mixed nickel(II) complex with phosphonate ester and nitrogen heterocyclic carbene ancillary ligands to catalyze a cross coupling reaction.

    METHODS OF MAKING NANOSTRUCTURED METAL-ORGANIC FRAMEWORKS

    公开(公告)号:US20200079796A1

    公开(公告)日:2020-03-12

    申请号:US16537806

    申请日:2019-08-12

    摘要: Disclosed herein are methods of making nanostructured metal-organic frameworks. The methods include contacting a homogenized ligand solution with a homogenized aqueous metal salt solution at room temperature to form a mixture; and agitating the mixture for an amount of time to thereby form the nanostructured metal-organic framework at room temperature; wherein the homogenized ligand solution comprises a ligand dispersed substantially homogenously in a solvent selected from the group consisting of water, ethanol, isopropanol, n-propanol, lactic acid, and combinations thereof; and wherein the homogenized aqueous metal salt solution comprises a metal salt dispersed substantially homogenously in an aqueous solvent. Also disclosed herein are nanostructured metal-organic frameworks made by the methods described herein. Also disclosed herein are articles of manufacture comprising nanostructured metal-organic frameworks made by the methods described herein, such as filters, respirators, gas masks, human protection devices, catalysts, and catalyst supports.

    METHOD FOR PRODUCING TRANSITION METAL-ISOCYANIDE COMPLEX

    公开(公告)号:US20200071347A1

    公开(公告)日:2020-03-05

    申请号:US16489520

    申请日:2018-02-27

    摘要: This method is for producing a transition metal complex represented by formula (2), the method comprising reacting a compound containing a transition metal selected from V, Cr, Mo, W, Fe, Ru, Co, Rh, Ni, Pd, and Pt with an isocyanide compound represented by formula (1) in the presence of an alkali metal supported by a solid substance which is insoluble in an organic solvent. This production method can be used to easily and efficiently produce a transition metal complex that includes a predetermined transition metal having an oxidation number of 0 and that has the same or different isocyanide compounds, without using a compound harmful to the human body. (1): (CN)x—R1 {R1 represents a mono- to tri-valent organic group having 1-30 carbon atoms, and x represents an integer of 1-3}. (2): M1a(L)b {M1 represents V, Cr, Mo, W, Fe, Ru, Co, Rh, Ni, Pd, or Pt, and is a zero-valent transition metal, L represents an isocyanide compound represented by formula (1), M1 and L may be the same or different from each other, “a” represents an integer of 1-8, and b represents an integer of 2-12}.