Design, synthesis and application of a new type of bifunctional Le-Phos in highly enantioselective γ-addition reactions of N-centered nucleophiles to allenoates
作者:Haile Qiu、Xiaofeng Chen、Junliang Zhang
DOI:10.1039/c9sc04073k
日期:——
A novel class of bifunctional cyclic phosphine catalysts (Le-Phos) is reported, which showed good performances in enantioselective γ-addition reactions of N-centered nucleophiles and allenoates under mild conditions.
Candidate PET Radioligand Development for Neurofibrillary Tangles: Two Distinct Radioligand Binding Sites Identified in Postmortem Alzheimer’s Disease Brain
作者:Lisheng Cai、Baoxi Qu、Bryan T. Hurtle、Sureshbabu Dadiboyena、Ramon Diaz-Arrastia、Victor W. Pike
DOI:10.1021/acschemneuro.6b00051
日期:2016.7.20
[(18)F]THK-523 and [(18)F]807 are promising radioligands for imaging neurofibrillary tangles (NFTs) with positron emission tomography (PET) in neurodegenerative diseases, such as Alzheimer's disease (AD) and traumatic brain injury. Although [(18)F]THK-523 and [(18)F]T807 are considered high-affinity selective radioligands for NFTs, uncertainty has existed as to whether PET radioligands for imaging
Discovery of <i>N</i>-Aroyl Diketone/Triketone Derivatives as Novel 4-Hydroxyphenylpyruvate Dioxygenase Inhibiting-Based Herbicides
作者:Ying Fu、Dong Zhang、Shuai-Qi Zhang、Yong-Xuan Liu、You-Yuan Guo、Meng-Xia Wang、Shuang Gao、Li-Xia Zhao、Fei Ye
DOI:10.1021/acs.jafc.9b01412
日期:2019.10.30
4-Hydroxyphenylpyruvatedioxygenase (HPPD, EC 1.13.11.27) is an important target site for discovering new bleaching herbicides. To explore novel HPPD inhibitors with excellent herbicidal activity, a series of novel N-aroyl diketone/triketone derivatives were rationally designed by splicing active groups and bioisosterism. Bioassays revealed that most of these derivatives displayed preferable herbicidal
Ruthenium-catalyzed synthesis of vinylamides at low acetylene pressure
作者:Elena Semina、Pavel Tuzina、Frank Bienewald、A. Stephen K. Hashmi、Thomas Schaub
DOI:10.1039/d0cc01533d
日期:——
The reaction of cyclic amides with acetylene under low pressure, using ruthenium-phosphine catalysts, afforded a broad variety of N-vinylated amides including (azabicyclic) lactams, oxazolidinones, benzoisoxazolones, isoindolinones, quinoxalinones, oxazinanones, cyclic urea derivatives (imidazolidinones), nucleobases (thymine), amino acid anhydrides and thiazolidinone.
[EN] SYNTHESIS OF N-VINYL COMPOUNDS BY REACTING CYLIC NH-COMPOUNDS WITH ACETYLENE IN PRESENCE OF HOMOGENOUS CATALYST<br/>[FR] SYNTHÈSE DE COMPOSÉS N-VINYLIQUES PAR RÉACTION DE COMPOSÉS NH- CYLIQUES AVEC DE L'ACÉTYLÈNE EN PRÉSENCE D'UN CATALYSEUR HOMOGÈNE
申请人:BASF SE
公开号:WO2021122249A1
公开(公告)日:2021-06-24
Process to produce N-vinyl compounds by homogeneous catalysis, wherein acetylene is reacted with a cyclic compound comprising a cyclic compound having at least one nitrogen as ring member, bearing a substitutable hydrogen residue (cyclic compound C), in a liquid phase in the presence of a ruthenium complex comprising at least one phosphine as ligand (RuCat).