Specific <i>Z</i>-Selectivity in the Oxidative Isomerization of Allyl Ethers to Generate Geometrically Defined <i>Z</i>-Enol Ethers Using a Cobalt(II)(salen) Complex Catalyst
作者:Guanxin Huang、Miaolin Ke、Yuan Tao、Fener Chen
DOI:10.1021/acs.joc.0c00004
日期:2020.4.17
synthesis of the geometrically less stable Z-enol ethers is challenging. An efficient Z-selective oxidative isomerization process of allyl ethers catalyzed by a cobalt(II) (salen) complex using N-fluoro-2,4,6-trimethylpyridinium trifluoromethanesulfonate (Me3NFPY•OTf) as an oxidant has been developed. Thermodynamically less stable Z-enol ethers were prepared in excellent yields with high geometric control.
Pd-Catalyzed regioselective hydroesterification of 2-allylphenols to seven-membered lactones without external CO gas
作者:Wenju Chang、Jingfu Li、Wenlong Ren、Yian Shi
DOI:10.1039/c5ob02663f
日期:——
Effective Pd-catalyzedregioselectivehydroesterification of 2-allylphenols with phenyl formate is described. A variety of seven-membered lactones can be obtained in good yields under mild conditions without the use of toxic CO gas.
Palladium-Catalyzed Tandem Oxidative Arylation/Olefination of Aromatic Tethered Alkenes/Alkynes
作者:Yang Gao、Yinglan Gao、Wanqing Wu、Huanfeng Jiang、Xiaobo Yang、Wenbo Liu、Chao-Jun Li
DOI:10.1002/chem.201605351
日期:2017.1.18
We describe herein a palladium‐catalyzed tandem oxidative arylation/olefination reaction of aromatic tethered alkenes/alkynes for the synthesis of dihydrobenzofurans and 2 H‐chromene derivatives. This reaction features a 1,2‐difunctionalization of C−C π‐bond with two C−H bonds using O2 as terminal oxidant at room temperature. The products obtained are valuable synthons and important scaffolds in biological
Phenylpiperazine derivatives with a combination of partial dopamine-D2 receptor agonism and serotonin reuptake inhibition
申请人:Feenstra W. Roelof
公开号:US20060122189A1
公开(公告)日:2006-06-08
The invention relates to a group of novel phenylpiperazine derivatives with a dual mode of action: serotonin reuptake inhibition and partial agonism on dopamine-D
2
receptors. The invention also relates to the use of a compound disclosed herein for the manufacture of a medicament giving a beneficial effect.
The compounds have the general formula (1):
wherein the symbols have the meanings given in the specification. and tautomers, stereoisomers and N-oxides thereof, as well as pharmacologically acceptable salts, hydrates and solvates of said compounds of formula (1) and its tautomers, stereoisomers and N-oxides.
Electrochemical C−H Cyanation of Electron-Rich (Hetero)Arenes
作者:Davit Hayrapetyan、Raja K. Rit、Markus Kratz、Kristina Tschulik、Lukas J. Gooßen
DOI:10.1002/chem.201802247
日期:2018.8.6
straightforward method for the electrochemical C−H cyanation of arenes and heteroarenes that proceeds at room temperature in MeOH, with NaCN as the reagent in a simple, open, undivided electrochemical cell is reported. The platinum electrodes are passivated by adsorbed cyanide, which allows conversion of an exceptionally broad range of electron‐rich substrates all the way down to dialkyl arenes. The cyanide electrolyte