Redox-mediation of electron–electron spin–spin exchange interactions, | J |, in paramagnetic trinuclear molybdenum complexes: an example of a ‘J switch’
Ni-catalyzed Reductive Deaminative Arylation at sp3 Carbon Centers
摘要:
A Ni-catalyzed reductive deaminative arylation at unactivated sp(3) carbon centers is described. This operationally simple and user-friendly protocol exhibits excellent chemoselectivity profile and broad substrate scope, thus complementing existing metal-catalyzed cross-coupling reactions to forge sp(3) C-C linkages. These virtues have been assessed in the context of late-stage functionalization, hence providing a strategic advantage to reliably generate structure diversity with amine-containing drugs.
“Bulky-Yet-Flexible” α-Diimine Palladium-Catalyzed Reductive Heck Cross-Coupling: Highly Anti-Markovnikov-Selective Hydroarylation of Alkene in Air
作者:Xu-Wen Yang、Dong-Hui Li、A-Xiang Song、Feng-Shou Liu
DOI:10.1021/acs.joc.0c01509
日期:2020.9.18
regioselective and efficient reductive Heck reaction, a series of moisture- and air-stable α-diimine palladium precatalysts were rationally designed, readily synthesized, and fully characterized. The relationship between the structures of the palladiumcomplexes and the catalytic properties was investigated. It was revealed that the“bulky-yet-flexible”palladiumcomplexes allowed highly anti-Markovnikov-selective
Construction of α-Amino Azines via Thianthrenation-Enabled Photocatalyzed Hydroarylation of Azine-Substituted Enamides with Arenes
作者:Yu-Lan Zhang、Gang-Hu Wang、Yichen Wu、Chun-Yin Zhu、Peng Wang
DOI:10.1021/acs.orglett.1c03229
日期:2021.11.5
Herein, we report a practical method for accessing this class of compounds via photocatalyzed hydroarylation of azine-substituted enamides with the in situ-generated aryl thianthrenium salts as the radical precursor. This reaction features a broad substrate scope, good functional group tolerance, and mild conditions and is suitable for the late-stage installation of α-amino azines in complex structures
Iridium-Catalyzed C-Alkylation of Methyl Group on <i>N</i>-Heteroaromatic Compounds using Alcohols
作者:Mitsuki Onoda、Ken-ichi Fujita
DOI:10.1021/acs.orglett.0c02635
日期:2020.9.18
In this study, we developed a catalytic system for the C-alkylation of a methyl group on N-heteroaromatic compounds, including pyridine, pyrimidine, pyrazine, quinoline, quinoxaline, and isoquinoline, using alcohols based on a hydrogen-borrowing process with [Cp*IrCl2]2 (Cp*: η5-pentamethylcyclopentadienyl) combined with potassium t-butoxide and 18-crown-6-ether as the catalyst precursor.
INHIBITORS OF HUMAN IMMUNODEFICIENCY VIRUS REPLICATION
申请人:BRISTOL-MYERS SQUIBB COMPANY
公开号:US20160257645A1
公开(公告)日:2016-09-08
Compounds of Formula I with activity against HIV, including pharmaceutical compositions and methods for using these compounds in treating human immunodeficiency virus (HIV) infection, are set forth: Formula: (I)
Provided is a novel donor-acceptor type compound which emits light even in a solid state. The present invention provides an organic optical material comprising a complex formed from (1) a conjugated molecule having (a) at least one electron donating site, (b) at least one electron accepting site, and (c) at least one conjugated site in the same molecule and (2) a compound having a proton donating property or an electron pair accepting property, the complex having a non-covalent interaction at the electron accepting site, wherein the complex is solid at ordinary temperature; and the organic optical material has a property of emitting light having a maximum fluorescence wavelength which causes a Stokes shift having a value corresponding to 5% or more of the value of a maximum absorption wavelength from the maximum absorption wavelength toward the long wavelength side.