氨磺酰氯的单电子还原比磺酰氯更具挑战性。然而,氨磺酰氯和磺酰氯可以很容易地通过甲硅烷基的 Cl 原子提取以相似的速率被激活。因此,选择这种后期的活化模式来获得脂肪族磺酰胺,使用廉价的烯烃、三(三甲基甲硅烷基)硅烷和光催化剂曙红 Y 进行单步氢氨磺酰化。这种后期功能化方案生成的分子与含磺酰胺的环丁基-直接用于药物化学的螺环吲哚。
Synthesis of [11C]/[13C]Acrylamides by Palladium-Mediated Carbonylation
作者:Jonas Eriksson、Ola Åberg、Bengt Långström
DOI:10.1002/ejoc.200600700
日期:2007.1
radioactivity of 84 GBq/mmol from 10 GBq of [11C]carbonmonoxide. [1-11C]Propyl iodide was synthesized with a specific radioactivity of 270 GBq/mmol from 12 GBq and [1-11C]butyl iodide with 146 GBq/mmol from 8 GBq.Palladium-mediated hydroxycarbonylation of acetylene was used in the synthesis of [1-11C]acrylic acid. The labelled carboxylic acid was converted to its acid chloride and subsequently treated with
Hydrofluoromethylation of alkenes with fluoroiodomethane and beyond
作者:Sandrine M. Hell、Claudio F. Meyer、Sebastiano Ortalli、Jeroen B. I. Sap、Xuanxiao Chen、Véronique Gouverneur
DOI:10.1039/d1sc03421a
日期:——
for the direct hydrofluoromethylation of alkenes is reported for the first time. This straighforward silyl radical-mediated reaction utilises CH2FI as a non-ozone depleting reagent, traditionally used in electrophilic, nucleophilic and carbene-type chemistry, but not as a CH2F radical source. By circumventing the challenges associated with the high reduction potential of CH2FI being closer to CH3I than
首次报道了烯烃直接氢氟甲基化的方法。这种直接的甲硅烷基自由基介导的反应利用 CH 2 FI 作为非臭氧消耗试剂,传统上用于亲电、亲核和卡宾型化学,但不作为 CH 2 F 自由基源。通过规避与 CH 2 FI的高还原电位比 CF 3 I更接近 CH 3 I相关的挑战,并利用 C-I 键的有利键解离能,我们证明了原料缺电子烯烃被转化在 (Me 3 Si) 3的干预下,由净氢氟甲基化产生的产物蓝色 LED 激活下的 SiH。这种看似简单但功能强大的方法已扩展到一系列(卤)甲基自由基前体,包括 ICH 2 I、ICH 2 Br、ICH 2 Cl 和 CHBr 2 F,以及 CH 3 I 本身;因此后一种试剂能够直接加氢甲基化。这种多功能化学被应用于18 F-、13 C- 和 D- 标记的试剂以及复杂的生物相关烯烃,为药物化学和正电子发射断层扫描中的应用提供了五十多种产品。
Hydrosulfonylation of Alkenes with Sulfonyl Chlorides under Visible Light Activation
作者:Sandrine M. Hell、Claudio F. Meyer、Antonio Misale、Jeroen B. I. Sap、Kirsten E. Christensen、Michael C. Willis、Andrés A. Trabanco、Véronique Gouverneur
DOI:10.1002/anie.202004070
日期:2020.7.6
Sulfonyl chlorides are inexpensive reactants extensively explored for functionalization, but never considered for radical hydrosulfonylation of alkenes. Herein, we report that tris(trimethylsilyl)silane is an ideal hydrogen atom donor enabling highly effective photoredox‐catalyzed hydrosulfonylation of electron‐deficient alkenes with sulfonyl chlorides. To increase the generality of this transformation
[EN] NOVEL COMPOUNDS AND COMPOSITIONS FOR THE INHIBITION OF NAMPT<br/>[FR] NOUVEAUX COMPOSÉS ET COMPOSITIONS POUR L'INHIBITION DE NAMPT
申请人:FORMA THERAPEUTICS INC
公开号:WO2012031197A1
公开(公告)日:2012-03-08
The present invention relates to compounds and compositions for the inhibition of NAMPT, their synthesis, applications and antidotes. An illustrative compound of the invention is shown below:
[EN] NOVEL COMPOUNDS AND COMPOSITIONS FOR THE INHIBITION OF NAMPT<br/>[FR] NOUVEAUX COMPOSÉS ET COMPOSITIONS UTILISÉS DANS L'INHIBITION DE NAMPT
申请人:FORMA TM LLC
公开号:WO2012150952A1
公开(公告)日:2012-11-08
The present invention relates to compounds and composition for inhibition of NAMPT, their synthesis, applications and antidotes. An illustrative compound of the invention is shown below.