C−H Activation Based Copper‐Catalyzed One‐Shot Synthesis of N,O‐Bidentate Organic Difluoroboron Complexes
作者:Guangying Tan、Malte L. Schrader、Constantin Daniliuc、Felix Strieth‐Kalthoff、Frank Glorius
DOI:10.1002/anie.202008311
日期:2020.11.23
Organic BF2 complexes exhibit characteristics such as large Stokes shift, high quantum yield, strong emission intensity, and robust chemical stability, thereby being extensively used in various applications. Herein, we disclose a novel copper‐catalyzed cascade C−H activation/acyloxylation and difluoroboronation of 2‐phenylpyridine derivatives, thus providing a straightforward and rapid gateway to a
Regioselective synthesis of 4-functionalized pyridines
作者:Chao Li、Zixi Yan、Bingding Wang、Jiaxing Li、Weiping Lyu、Zhixing Wang、Ning Jiao、Song Song
DOI:10.1016/j.chempr.2023.10.015
日期:2024.2
pyridine derivatives. However, this reaction is still unexplored because of the inert property of pyridine and the challenge in the regioselectivity. Herein, we report an aromatic C-4 selective functionalization of pyridine -oxides with DABCO and TfO as the regioselective controller. The commercial availability of reagents, good tolerance of functional groups, and simple operability made it a promising
Aromatic acetylene or aromatic ethylene compound, intermediate, preparation method, pharmaceutical composition and use thereof
申请人:GUANGZHOU MAXINOVEL PHARMACEUTICALS CO., LTD.
公开号:US11078192B2
公开(公告)日:2021-08-03
Disclosed are an aromatic acetylene or aromatic ethylene compound, an intermediate, a preparation method, a pharmaceutical composition and a use thereof. The aromatic acetylene or aromatic ethylene compound has a significant inhibitory effect on PD-1 and PD-L1, and can effectively relieve or treat cancers and other related diseases.
AROMATIC ACETYLENE OR AROMATIC ETHYLENE COMPOUND, INTERMEDIATE, PREPARATION METHOD, PHARMACEUTICAL COMPOSITION AND USE THEREOF
申请人:GUANGZHOU MAXINOVEL PHARMACEUTICALS CO., LTD.
公开号:US20190308957A1
公开(公告)日:2019-10-10
Disclosed are an aromatic acetylene or aromatic ethylene compound, an intermediate, a preparation method, a pharmaceutical composition and a use thereof. The aromatic acetylene or aromatic ethylene compound has a significant inhibitory effect on PD-1 and PD-L1, and can effectively relieve or treat cancers and other related diseases.
A novel and robust heterogeneous Cu catalyst using modified lignosulfonate as support for the synthesis of nitrogen-containing heterocycles
A wastebiomass, sodium lignosulfonate, was treated with sodium 2-formylbenzenesulfonate, and the phenylaldehyde condensation product was then used as a robust supportingmaterial to immobilize a copper species. The so-obtained catalyst was characterized by many physicochemical methods including FTIR, EA, FSEM, FTEM, XPS, and TG. This catalyst exhibited excellent catalytic activity in the synthesis