A palladium-catalyzed carbon–carbon bond activation-initiated reaction of 2-(3-phenyloxiran-2-yl)benzonitriles with arylboronic acids is reported. Multiple chemical bonds were cleavaged and reconstructed via β-carbon elimination in this reaction, enabling the construction of valuable benzo-fused dipyrromethenes that are difficult to prepare by other methods. Additionally, a series of benzannulated
Compounds of formula (I)
1
or pharmaceutically acceptable salts thereof, inhibit farnesyltransferase. Methods for making the compounds, pharmaceutical compositions containing the compounds, and methods of treatment using the compounds are disclosed.
A lanthanide‐catalyzed intermolecular hydroamination of 2‐alkynylbenzonitriles with secondary amines has been disclosed, providing a streamlined access to a range of aminoisoindoles in moderate to excellent yields. The salient features of this reaction include high bond‐formation efficiency, mild reaction conditions, 100 % atomic efficiency and good functional group tolerance. This methodology has
Enantioselective CH Bond Functionalization Triggered by Radical Trifluoromethylation of Unactivated Alkene
作者:Peng Yu、Jin-Shun Lin、Lei Li、Sheng-Cai Zheng、Ya-Ping Xiong、Li-Jiao Zhao、Bin Tan、Xin-Yuan Liu
DOI:10.1002/anie.201405401
日期:2014.10.27
An asymmetric unactivatedalkene/CHbond difunctionalization reaction for the concomitant construction of CCF3 and CO bonds was realized by using a Cu/Brønsted acid cooperative catalytic system, thus providing facile access to valuable chiral CF3‐containing N,O‐aminals with excellent regio‐, chemo‐, and enantioselectivity. Mechanistic studies revealed that this reaction may proceed by an unprecedented
不对称非活化烯烃/ C 为C的伴随建筑H键difunctionalization反应 CF 3和C O键是通过使用Cu /布朗斯台德酸催化的合作系统,从而提供了有价值的手性CF容易访问实现3含Ñ ,O-缩醛胺具有出色的区域,化学和对映选择性。机制研究表明,该反应可以通过涉及未活化烯烃的活化和自由基三氟甲基化以引发的C后续的对映选择性的官能化了前所未有的1,5-氢化移继续H键。对照实验还表明,手性布朗斯台德酸起多种作用,不仅控制立体选择性,而且还通过激活Togni试剂提高了反应速率。
Super-Electron-Donor 2-Azaallyl Anions Enable Construction of Isoquinolines
Herein is introduced the application of “super-electron-donor”(SED) 2-azaallylanions in a tandem reduction/radical cyclization/radical coupling/aromatization protocol that enables the rapid construction of isoquinolines. The value of this transition-metal-free method is highlighted by the wide range of isoquinoline ethyl amines prepared with good functional group tolerance and yields. An operationally