Supramolecular assembly of a quaterthiophene surfactantElectronic supplementary information (ESI) available: synthetic procedures and spectral characterization of 1 and precursors of Scheme 1. See http://www.rsc.org/suppdata/cc/b3/b316657k/
Supramolecular assembly of a quaterthiophene surfactantElectronic supplementary information (ESI) available: synthetic procedures and spectral characterization of 1 and precursors of Scheme 1. See http://www.rsc.org/suppdata/cc/b3/b316657k/
Direct C–H Arylation of Heteroarenes with Copper Impregnated on Magnetite as a Reusable Catalyst: Evidence for CuO Nanoparticle Catalysis in Solution
作者:Suhelen Vásquez-Céspedes、Kathryn M. Chepiga、Nadja Möller、Andreas H. Schäfer、Frank Glorius
DOI:10.1021/acscatal.6b01288
日期:2016.9.2
operationally simple reaction conditions good yields and selectivities were obtained using diaryliodoniumsalts as coupling partners. A combination of experimental methods including kinetic studies, filtration tests, and a series of analytical tools (TXRF, ICP-MS, SEM, XPS, TEM, EFTEM) provide evidence for catalytically active soluble nanoparticles formed from an amorphous heterogeneous precursor. Mechanistic
Palladium-catalyzed oxidative C–H/C–H cross-coupling of pyrazolo[1,5-<i>a</i>]azines with five-membered heteroarenes
作者:Thanh V. Q. Nguyen、Lorenzo Poli、Aaron T. Garrison
DOI:10.1039/d1cc06337e
日期:——
as the oxidant enabled the direct regioselectiveoxidativeC–H/C–H cross-coupling of pyrazolo[1,5-a]pyrimidines or pyrazolo[1,5-a]pyridines with various five-membered heteroarenes without the need of pre-activation and/or directing groups. Successful coupling partners include thiophenes, benzothiophenes, thiazoles, furans, oxazoles, indoles and imidazo[1,2-a]pyridines.
使用 Pd(OAc) 2作为催化剂,AgOAc 作为氧化剂,使得吡唑并[1,5- a ]嘧啶或吡唑并[1,5 - a ]的直接区域选择性氧化C-H/C-H交叉偶联成为可能吡啶与各种五元杂芳烃,无需预活化和/或导向基团。成功的偶联伙伴包括噻吩、苯并噻吩、噻唑、呋喃、恶唑、吲哚和咪唑并[1,2- a ]吡啶。
Synthesis and class III type antiarrhythmic activity of 4-aroyl (and aryl)-1-aralkylpiperazines
作者:Ramesh M. Kanojia、Joseph J. Salata、Jack Kauffman
DOI:10.1016/s0960-894x(00)00581-3
日期:2000.12
The synthesis and in vitro Class III antiarrhythmic activity of several 4-aroyl (and aryl)-1-aralkylpiperazine and piperidinederivatives are described. Among several potent compounds identified in the series, RWJ-28810 (3), with its EC20 of 3 nM, ranks as one of the most potent (in vitro) compounds reported.
[EN] P38 MAP KINASE INHIBITORS<br/>[FR] INHIBITEURS DE LA MAP KINASE P38
申请人:CHROMA THERAPEUTICS LTD
公开号:WO2009060160A1
公开(公告)日:2009-05-14
Compounds of formula (I) are inhibitors of p38 MAP kinase, and are therefore of utility in the treatment of, inter alia, inflammatory conditions including rheumatoid arthritis and COPD: formula (I) wherein: G is -N= or -CH=; D is an optionally substituted divalent mono- or bi-cyclic aryl or heteroaryl radical having 5 - 13 ring members; R6 is hydrogen or optionally substituted C1-C3 alkyl; P represents hydrogen and U represents a radical of formula (IA); or U represents hydrogen and P represents a radical of formula -A-(CH2)z-X1-L1 -Y-NH-CHR1R2 wherein A represents an optionally substituted divalent mono- or bicyclic carbocyclic or heterocyclic radical having 5 - 13 ring members; z, Y, L1, and X1 are as defined in the specification; R1 is a carboxylic acid group (-COOH), or an ester group which is hydrolysable by one or more intracellular esterase enzymes to a carboxylic acid group; and R2 is the side chain of a natural or non-natural alpha amino acid.
Organophotocatalytic Regioselective C−H Alkylation of Electron‐Rich Arenes Using Activated and Unactivated Alkenes
作者:Bi‐Hong Chen、Yi‐Dan Du、Wei Shu
DOI:10.1002/anie.202200773
日期:2022.6.7
Herein, a metal-free photocatalyzed site- and regioselective C−H alkylation of electron-rich arenes at room temperature using alkenes as the alkylating reagents is described for the first time. The alkylation proceeds in the absence of any directing groups, and tolerates both activated and unactivated alkenes to deliver alkylated arenes with broad functional-group tolerance, providing an alternative