metal-catalyzed carbometallation of unsaturated hydrocarbons constitutes one of the most efficient synthetic methodologies for the construction of C—C bond. Recently, the incorporation of organometallic reagent with the CO gas as a nucleophilic acyl synthon could enable the acylmetallation reaction, which greatly increases the horizon of carbometallation chemistry. Herein, we report a nickel-catalyzed
A Robust First-Pass Protocol for the Heck–Mizoroki Reaction
作者:Paul M. Murray、John F. Bower、David K. Cox、Ewan K. Galbraith、Jeremy S. Parker、Joseph B. Sweeney
DOI:10.1021/op300364p
日期:2013.3.15
The Heck-Mizoroki (HM) reaction is one of the most widely used C-C bond-forming methods of contemporary synthesis. Notwithstanding this, these reactions frequently require significant optimization before efficient transformations can be obtained. We describe here the results of a study that aimed to establish a generic experimental protocol for HM reactions which enables acceptable yields from first-pass experiments. The methodology utilizes readily available stable catalysts and can be applied to a broad range of coupling partners.
Potent antagonists of the Kv1.5 potassium channel: Synthesis and evaluation of analogous N,N-diisopropyl-2-(pyridine-3-yl)acetamides
作者:Kausik K. Nanda、M. Brad Nolt、Matthew J. Cato、Stefanie A. Kane、Laszlo Kiss、Robert H. Spencer、Jixin Wang、Joseph J. Lynch、Christopher P. Regan、Gary L. Stump、Bing Li、Rebecca White、Suzie Yeh、Michael J. Bogusky、Mark T. Bilodeau、Christopher J. Dinsmore、Craig W. Lindsley、George D. Hartman、Scott E. Wolkenberg、B. Wesley Trotter
DOI:10.1016/j.bmcl.2006.08.054
日期:2006.11
This letter describes the discovery of a novel series of potent Kv1.5 ion channel antagonists based on a diisopropyl amide scaffold. Structure-activity relationships of functionalized analogs are discussed. Key compound 1-(3-(diisopropylcarbamoyl)-2phenyl-3-(pyridin-3-yl)propyl)-3-(2-fluorobenzyl)urea (10) exhibits significant atrial-selective effects in an in vivo model. (c) 2006 Elsevier Ltd. All rights reserved.