[EN] OXADIAZOLONES AS TRANSIENT RECEPTOR POTENTIAL CHANNEL INHIBITORS [FR] OXADIAZOLONES EN TANT QU'INHIBITEURS DE CANAL POTENTIEL RÉCEPTEUR TRANSITOIRE
[EN] NOVEL OXABISPIDINE COMPOUNDS AND THEIR USE IN THE TREATMENT OF CARDIAC ARRHYTHMIAS [FR] NOUVEAUX COMPOSES OXABISPIDINE ET LEUR UTILISATION DANS LE TRAITEMENT DES ARYTHMIES CARDIAQUES
Catalytic radical difluoromethoxylation of arenes and heteroarenes
作者:Johnny W. Lee、Weijia Zheng、Cristian A. Morales-Rivera、Peng Liu、Ming-Yu Ngai
DOI:10.1039/c8sc05390a
日期:——
Intermolecular C–H difluoromethoxylation of (hetero)arenes remains a long-standing and unsolved problem in organic synthesis. Herein, we report the first catalytic protocol employing a redox-active difluoromethoxylating reagent 1a and photoredox catalysts for the direct C–H difluoromethoxylation of (hetero)arenes. Our approach is operationally simple, proceeds at room temperature, and uses bench-stable
[EN] DIFLUOROMETHOXYLATION AND TRIFLUOROMETHOXYLATION COMPOSITIONS AND METHODS FOR SYNTHESIZING SAME<br/>[FR] COMPOSITIONS DE DIFLUOROMÉTHOXYLATION ET DE TRIFLUOROMÉTHOXYLATION ET LEURS PROCÉDÉS DE SYNTHÈSE
申请人:UNIV NEW YORK STATE RES FOUND
公开号:WO2019168874A1
公开(公告)日:2019-09-06
The present invention provides a compound having the structure (I), a processing of making the compound; and a process of using the compound as a reagent for the difluoromethoxylation and trifluoromethoxylation of arenes or heteroarenes.
Difluoromethylation of Phenols and Thiophenols with the <i>S</i>-(Difluo-romethyl)sulfonium Salt: Reaction, Scope, and Mechanistic Study
作者:Guo-Kai Liu、Wen-Bing Qin、Xin Li、Li-Ting Lin、Henry N. C. Wong
DOI:10.1021/acs.joc.9b02424
日期:2019.12.20
A facile and practical approach for the difluoromethylation of phenols and thiophenols was described. Making use of the recently developed bench-stable S-(difluoromethyl)sulfonium salt as the difluorocarbene precursor, a wide variety of diversely functionalized phenols and thiophenols were readily converted to their corresponding aryl difluoromethyl ethers in good to excellent yields in the presence
The effective difluoromethylations of various S- and O- based- nucleophiles, presenting a wide range of pKa values, using diethyl(bromodifluoromethyl) phosphonate (1) under basic conditions is described. These reactions, which rely on the quantitative generation of difluorocarbene formed through the hydrolysis of 1, were found to be effective only once the starting materials had pKa values of less
描述了在碱性条件下使用(溴二氟甲基)膦酸二乙酯 ( 1 )对各种基于S - 和O - 的亲核试剂进行有效二氟甲基化,呈现出广泛的 p K a值。这些反应依赖于通过1水解形成的二氟卡宾的定量产生,发现只有当起始材料的 p K a值小于约1时才有效。11. 重要的是,在底物具有两个或三个亲核中心的情况下,该特征成功实现以实现中心的高化学或区域选择性二氟甲基化,表现出最低的 p K一个值和最高极化。
Novel Oxabispidine Compounds and Their Use in the Treatment of Cardiac Arrhythmias
申请人:Bjore Annika
公开号:US20090005558A1
公开(公告)日:2009-01-01
There is provided compounds of formula (I), wherein R
1
, R
2
, R
3
, R
4
, R
41
to R
46
, A, B and G have meanings given in the description, which are useful in the prophylaxis and in the treatment of arrhythmias, in particular atrial and ventricular arrhythmias.