A compound selected from the group consisting of all possible isomeric forms, racemic or optically active of a compound of the formula ##STR1## wherein the substituents are defined in the specification, and their non-toxic, pharmaceutically acceptable acid addition salts having antiarhythmic activity.
Visible-Light Photoredox-Catalyzed Three-Component Reaction of Carbazoles with Alkenes and <i>S</i>-(Difluoromethyl)sulfonium Salt: A Practical Approach to Access Difluoroalkyl-Functionalized Carbazoles
作者:Ya-Shi Zhao、Yuan-Qing Gu、Dan-Dan Zhang、Mei-Feng Ruan、Guo-Kai Liu
DOI:10.1021/acs.joc.3c00773
日期:2023.8.4
mild and elegant multicomponent protocol for construction of CF2H-containing carbazoles was accomplished by visible-light photoredox catalysis with formation of two new C–C bonds in a single step to deliver a wide variety of structurally diverse difluoroalkylated carbazoles in moderate to good yields, featuring mild reaction conditions, synthetic simplicity, broad substrates, and good functional group
通过可见光光氧化还原催化,一步形成两个新的 C-C 键,完成了用于构建含 CF 2 H 咔唑的温和而优雅的多组分方案,以中等至良好的速度提供多种结构多样的二氟烷基化咔唑具有反应条件温和、合成简单、底物广泛、官能团耐受性好的特点。
US5063225A
申请人:——
公开号:US5063225A
公开(公告)日:1991-11-05
Copper-catalyzed direct hydroxyphosphorylation of electron-deficient alkenes with H-phosphine oxides and dioxygen
A copper-catalyzed direct hydroxyphosphorylation of electron-deficient alkenes with H-phosphine oxides and dioxygen is reported. The present reaction, proceeds under mild reaction conditions with good functional group tolerance, affording the facile and efficient synthesis of various β-hydroxyphosphine oxides in a scaled-up manner with moderate to good yields.
We herein report α-arylsulfonyloxyacrylates as a kind of useful and attractive O-centered electrophiles for Suzuki cross-coupling reactions. A range of α-(hetero)aryl substituted acrylates has been prepared via the palladium-catalysed C–C cross-coupling reactions between potassium (hetero)aryltrifluoroborates and α-arylsulfonyloxyacrylates. Moreover, α-arylsulfonyloxyacrylate could also react with