The lithium derivative of indole reacts with fluorosilanes to form the mono-(1-4), bis-(5,6), tris-(7,8), and tetrakis(indole-1-yl)silanes (9). The crystal structure of 9 is described.
There are disclosed compounds of the formula I:
1
or a pharmaceutically acceptable salt of the compound, which exhibit anti-inflammatory and immunomodulatory activity. Also disclosed are pharmaceutical compositions containing said compounds.
Ethyl 2-benzyloxy-3,3-difluoropropenoate as a novel synthon of β-fluoro-α-keto acid derivatives, preparation and reactions with nucleophiles
作者:Guo-qiang Shi、Zhi-yao Cao
DOI:10.1039/c39950001969
日期:——
Ethyl 2-benzyloxy-3,3-difluoropropenoate 3, prepared from the readily obtainable ethyl trifluoropyruvate, reacts with a variety of nucleophiles to give β-fluoro-α-keto acid derivatives in high yield.
Palladium-Catalyzed Stereocontrolled Vinylation of Azoles and Phenothiazine
作者:Artyom Y. Lebedev、Vyatcheslav V. Izmer、Denis N. Kazyul'kin、Irina P. Beletskaya、Alexander Z. Voskoboynikov
DOI:10.1021/ol0172370
日期:2002.2.1
with vinyl bromides catalyzed by palladium-phosphine complexes results in the respective N-vinylazoles in 30-99% yields. This reaction with cis- and trans-beta-bromostyrenes is stereospecific giving the respective products with full retention of configuration.
synthesis of an indolo[4,3-fg] morphan system has been achieved through a route involving the acid-catalyzed cyclization of a 3-(tetrahydro-2-pyridyl)indoline. A procedure for the reduction of 3-(tetrahydropyridyl) indoles to the corresponding, indolines, consisting in the formation of the tetrahydropyridine-borane complex followed by treatment with ethanolic hydrochloric acid. is established.
Evaluation of Donor and Steric Properties of Anionic Ligands on High Valent Transition Metals
作者:Stephen A. DiFranco、Nicholas A. Maciulis、Richard J. Staples、Rami J. Batrice、Aaron L. Odom
DOI:10.1021/ic202524r
日期:2012.1.16
chemical shifts for a tungsten-based system with various X ligands plotted versus LDP provided a linear fit. In addition, the angularoverlapmodel derived eσ + eπ values for chromium(III) ammine complexes correlate with LDP values. Also discussed is the correlation with XTiCp*2 spectroscopic data. X-ray diffraction has been used used to characterize 31 of the compounds. From the X-ray diffraction data
报告了各种通式为NCr(NPr i 2)2 X的铬(VI)氮化铬化合物的合成规程和表征数据,其中X = NPr i 2(1),I(2),Cl(3), Br(4),OTf(5),1-金刚烷氧化物(6),OSiPh 3(7),O 2 CPh(8),OBu t F6(9),OPh(10),O- p-(OMe)C 6 H 4(11),O-p-(SMe)C 6 H 4(12),O- p-(Bu t)C 6 H 4(13),O- p-(F)C 6 H 4(14),O- p-(Cl )C 6 H 4(15),O- p-(CF 3)C 6 H 4(16),OC 6 F 5(17),κ(O)-N-氧邻苯二甲酰亚胺(18),SPh(19),OCH 2 Ph(20),NO 3(21),吡咯基(22),3-C 6 F 5-吡咯基(23),3- [3,5-(CF 3)2 C 6 H 3 ]吡咯基(24),吲哚基(2