[EN] PROCESS FOR THE MANUFACTURE OF [PHENYLSULFANYLPHENYL]PIPERIDINES<br/>[FR] PROCÉDÉ DE FABRICATION DE [PHÉNYLSULFANYLPHÉNYL]PIPÉRIDINES
申请人:LUNDBECK & CO AS H
公开号:WO2009109541A1
公开(公告)日:2009-09-11
A process for the manufacture of (un)substituted phenylsulfanylphenyl-piperidines comprising the use of benzyl as N-piperidine protecting group is disclosed.
The present invention relates to compound of formula (I), wherein R1 is chloro, bromo iodo or a brosylate group. The present invention also relates to methods of making this compound and its use in carrying out organic transformations.
Switching on elusive organometallic mechanisms with photoredox catalysis
作者:Jack A. Terrett、James D. Cuthbertson、Valerie W. Shurtleff、David W. C. MacMillan
DOI:10.1038/nature14875
日期:2015.8
step) to occur via a Ni(iii) alkoxide intermediate. Here we demonstrate that visible-light-excited photoredox catalysts can modulate the preferred oxidation states of nickel alkoxides in an operative catalytic cycle, thereby providing transient access to Ni(iii) species that readily participate in reductive elimination. Using this synergistic merger of photoredox and nickel catalysis, we have developed
Abstract An efficient and simple approach for the direct synthesis of aryl and heteroaryl sulfonic esters was developed using DMS and DES as alkoxysulfonylation reagents. The reaction is operationally simple and scalable. This protocol does not require solvent, expensive catalysts, base, ligand additives or other reagents. A wide range of sulfonic esters were synthesized in moderate to good chemical
摘要 使用 DMS 和 DES 作为烷氧基磺酰化试剂,开发了一种直接合成芳基和杂芳基磺酸酯的有效且简单的方法。该反应操作简单且可扩展。该协议不需要溶剂、昂贵的催化剂、碱、配体添加剂或其他试剂。以中等至良好的化学产率合成了多种磺酸酯。这种方法的优点是成本低、简便易行且可耐受的基材范围广。图形概要
Correlation of the rates of reaction of arenesulfonate ions with the trimethyloxonium ion in acetonitrile
作者:Dennis N. Kevill、Gloria Meichia L. Lin、An Wang
DOI:10.1016/s0040-4020(01)93682-8
日期:1980.1
The kinetics of the reactions between trimethyloxonium hexafluorophosphate and a series of tetra-n-butylammonium arenesulfonates have been studied in acetonitrile at −23.4°. With the oxonium salt concentration at about 0.01 M, two series of runs were carried out; Hammett plots of the second-order rate coefficients led to ϱ values of −1.18±0.04 for 0.04 M arenesulfonate salt and −1.07±0.02 for 0.16