substituents on both the sulfonamide nitrogen and phenyl group of OBHSA unit had significant effect on biological activities. Among them, conjugate 16i with N-methyl and naphthyl groups exhibited potent antiproliferative activity against MCF-7 cells, and excellent ERα degradation activity and HDACs inhibitory ability. A further molecular docking study indicated the interaction patterns of these conjugates
Rhodamine Spiroamides for Multicolor Single-Molecule Switching Fluorescent Nanoscopy
作者:Vladimir N. Belov、Mariano L. Bossi、Jonas Fölling、Vadim P. Boyarskiy、Stefan W. Hell
DOI:10.1002/chem.200901333
日期:2009.10.19
good photoactivation, a large number of emitted photons, and selective chemical binding with amino or thiol groups were achieved due to the presence of various functional groups on the rhodamine spiroamides. Rigidizedsulfonatedxanthenefragment fused with six‐membered rings, N,N′‐bis(2,2,2‐trifluoroethyl) groups, and a combination of additional double bonds and sulfonic acid groups with simple aliphatic
N-Fluoroalkylation of amines was efficiently achieved using fluoroalkyl alcohols activated by 2,4,6-trichloro-1,3,5-triazine under mild and catalyst-free conditions.
Palladium-Catalyzed Arylation of Fluoroalkylamines
作者:Andrew T. Brusoe、John F. Hartwig
DOI:10.1021/jacs.5b02512
日期:2015.7.8
fluoroalkylaniline products are unstable under typical conditions for C-N coupling reactions (heat and strong base). However, the reactions conducted with the weaker base KOPh, which has rarely been used in cross-coupling to form C-N bonds, occurred in high yield in the presence of a catalyst derived from commercially available AdBippyPhos and [Pd(allyl)Cl]2. Under these conditions, the reactions occur with low
[EN] PALLADIUM-CATALYZED ARYLATION OF FLUOROALKYLAMINES<br/>[FR] ARYLATION CATALYSÉE PAR LE PALLADIUM DE FLUOROALKYLAMINES
申请人:UNIV CALIFORNIA
公开号:WO2016183101A1
公开(公告)日:2016-11-17
Methods for synthesizing trifluoroethyl, difluoroethyl, pentafluoropropyl, and difluorophenethyl anilines by palladium-catalyzed coupling of fluoroalkylamines with aryl bromides and aryl chlorides are provided herein. The reaction is conducted with a weaker base such as KOPh in the presence of a catalyst derived from AdBippyPhos and [Pd(allyl)Cl]2. The reactions occur with catalyst loadings less than about 0.50 mol% and tolerate the presence of various functional groups that react with the strong bases that are typically used in Pd-catalyzed C-N cross coupling reactions of aryl halides. The resting state of the catalyst is the phenoxide complex, (BippyPhosPd(Ar)OPh); due to the electron-withdrawing property of the fluoroalkyl substituent, the turn-over limiting step of the reaction is reductive elimination to form the C-N bond.