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    Synthetic method and application of 2-hydroxyphenyl-5-pyrazinyl ketone
    2.
    发明授权
    Synthetic method and application of 2-hydroxyphenyl-5-pyrazinyl ketone 有权

    公开(公告)号：US11746092B2

    公开(公告)日：2023-09-05

    申请号：US17388067

    申请日：2021-07-29

    Applicant: Intelligent Manufacturing Institute of Hefei University of Technology ,  Hefei University of Technology

    Inventor： Mei Luo

    IPC: C07D239/26 ,  B01J31/02

    CPC classification number: C07D239/26 ,  B01J31/0244

    Abstract: A method of synthesizing a 2-hydroxyphenyl-5-pyrimide ketone represented by the following chemical formula (I), including: weighing 0.048 g of a palladium complex, 0.8413 g of chromone-3-formaldehyde and 2.5719 g of ammonium formate into a 100 mL round bottom flask, then adding 50 mL of anhydrous methanol to dissolve, heating to reflux for 36 h, then stopping the reaction, performing column chromatography with petroleum ether and dichloromethane in a volume ratio of 1:1, and then naturally volatilizing the first component to obtain a light yellow crystal, namely the 2-hydroxyphenyl-5-pyrimidine ketone;
    wherein the chemical formula of the compound (I) is as follows:




    and

    an use of compound (I) as a catalyst in the reaction of benzophenone imine and trimethylsilyl nitrile showing a good catalytic performance, with a conversion rate of 69.1%.

    SYNTHETIC METHOD AND APPLICATION OF 2-HYDROXYPHENYL-5-PYRAZINYL KETONE
    7.
    发明申请
    SYNTHETIC METHOD AND APPLICATION OF 2-HYDROXYPHENYL-5-PYRAZINYL KETONE 有权

    公开(公告)号：US20220033362A1

    公开(公告)日：2022-02-03

    申请号：US17388067

    申请日：2021-09-16

    Applicant: Intelligent Manufacturing Institute of Hefei University of Technology ,  Hefei University of Technology

    Inventor： Mei LUO

    IPC: C07D239/26 ,  B01J31/02

    Abstract: Disclosed is a method of synthesizing a 2-hydroxyphenyl-5-pyrazinel ketone represented by the following chemical formula (I), comprising: weighing 0.048 g of a palladium complex, 0.8413 g of chromone-3-formaldehyde and 2.5719 g of ammonium formate into a 100 mL round bottom flask, then adding 50 mL of anhydrous methanol to dissolve, heating to reflux for 36 h, then stopping the reaction, performing column chromatography with petroleum ether and dichloromethane in a volume ratio of 1:1, and then naturally volatilizing the first component to obtain a light yellow crystal, namely the 2-hydroxyphenyl-5-pyrazinel ketone, referred to as compound (I); the chemical formula of the compound (I) is as follows: an application of compound (I) as a catalyst in the reaction of benzophenone imine and trimethylsilyl nitrile showing a good catalytic performance, with a conversion rate of 69.1%.

    Micro-displacement measurement system having picometer scale resolution and measurement method
    9.
    发明授权
    Micro-displacement measurement system having picometer scale resolution and measurement method 有权

    公开(公告)号：US12247856B2

    公开(公告)日：2025-03-11

    申请号：US18280240

    申请日：2022-07-05

    Applicant: HEFEI UNIVERSITY OF TECHNOLOGY

    Inventor： Fangfang Liu ,  Xinyang Liu ,  Wei Zhou ,  Xin Ran ,  Hongli Li ,  Haojie Xia

    IPC: G01D5/353 ,  G01B11/14

    Abstract: A micro-displacement measurement system having a picometer scale resolution and a measurement method. The measurement system comprises a probe module, a demodulation optical path module, a static lock-in amplification module, an upper computer module, and a micro-displacement drive module. The probe module comprises a measurement FBG sensor, a matching FBG sensor, a precision stainless steel needle tube, and an external support; the demodulation optical path module comprises an ASE broadband light source, a first circulator, a second circulator, and an InGaAs photodetector; the upper computer module comprises a data acquisition card and a computer; and the micro-displacement drive module comprises a piezoelectric ceramic nano-positioner, a piezoelectric ceramic driver, a three-dimensional precision micro-motion platform.

    DYNAMICALLY TRACEABLE PRIVACY-PRESERVING DISTRIBUTED THRESHOLD SIGNATURE SYSTEM AND METHOD
    10.
    发明申请
    DYNAMICALLY TRACEABLE PRIVACY-PRESERVING DISTRIBUTED THRESHOLD SIGNATURE SYSTEM AND METHOD 有权

    公开(公告)号：US20240396738A1

    公开(公告)日：2024-11-28

    申请号：US18582670

    申请日：2024-02-21

    Applicant: HEFEI UNIVERSITY OF TECHNOLOGY

    Inventor： Meng LI ,  Mingwei ZHANG ,  Hanni DING

    IPC: H04L9/32 ,  H04L9/08

    Abstract: The present disclosure discloses a dynamically traceable privacy-preserving distributed threshold signature system and method, which are applied to an environment composed of multiple signer modules, multiple aggregator modules, multiple notary modules, multiple tracer modules and a blockchain module; where the signer module signs data, encrypts a signature and uploads encrypted signature to the blockchain module; the aggregator module receives the encrypted signatures from the blockchain module and aggregates them into a synthetic signature, and at the same time sends a corresponding transaction to the blockchain module; the notary module locates the synthetic signature in the blockchain module and partially decrypts the synthetic signature into multiple synthetic signature fragments; the tracer module aggregates synthetic signature fragments and traces a set of signers; and the blockchain module consists of multiple nodes and is responsible for receiving transactions sent by each module.

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