Direct substitution of aromatic ethers by lithium amides. A new aromatic amination reaction
摘要:
Reaction of lithiated dialkylamines with methoxy aromatics in refluxing THF leads to products resulting from a direct ipso-substitution. Especially with lithiated secondary amines high conversions and selectivities are achieved. Sulfonyl-substituted aromatics react equally well, but halogenated aromatics give rise to side-products arising from a competing pathway via aryne intermediates. The scope and mechanistic implications of this novel nucleophilic amination reaction are described.
[EN] PRMT5 INHIBITORS CONTAINING A DIHYDRO- OR TETRAHYDROISOQUINOLINE AND USES THEREOF<br/>[FR] INHIBITEURS DE LA PRMT5 CONTENANT UNE DIHYDRO- OU TÉTRAHYDRO-ISOQUINOLÉINE ET LEURS UTILISATIONS
申请人:EPIZYME INC
公开号:WO2014100730A1
公开(公告)日:2014-06-26
Described herein are compounds of Formula (A), pharmaceutically acceptable salts thereof, and pharmaceutical compositions thereof. Compounds of the present invention are useful for inhibiting PRMT5 activity. Methods of using the compounds for treating PRMT5- mediated disorders are also described.
Described herein are compounds of Formula (I), pharmaceutically acceptable salts thereof, and pharmaceutical compositions thereof. Compounds of the present invention are useful for inhibiting PRMT5 activity. Methods of using the compounds for treating PRMT5-mediated disorders are also described.
Practical Catalytic Cleavage of C(sp
<sup>3</sup>
)−C(sp
<sup>3</sup>
) Bonds in Amines
作者:Wu Li、Weiping Liu、David K. Leonard、Jabor Rabeah、Kathrin Junge、Angelika Brückner、Matthias Beller
DOI:10.1002/anie.201903019
日期:2019.7.29
The selective cleavage of thermodynamically stable C(sp3)−C(sp3) single bonds is rare compared to their ubiquitous formation. Herein, we describe a general methodology for such transformations using homogeneous copper‐based catalysts in the presence of air. The utility of this novel methodology is demonstrated for Cα−Cβ bond scission in >70 amines with excellent functional group tolerance. This transformation
Water-soluble palladacycles containing hydroxymethyl groups: synthesis, crystal structures and use as catalysts for amination and Suzuki coupling of reactions
作者:Xin Han、Hong-Mei Li、Chen Xu、Zhi-Qiang Xiao、Zhi-Qiang Wang、Wei-Jun Fu、Xin-Qi Hao、Mao-Ping Song
DOI:10.1007/s11243-016-0036-5
日期:2016.5
2-dicyclohexylphosphino-2′,6′-dimethoxybiphenyl(Sphos)]-palladacycles containing hydroxymethyl groups 2–3 were prepared by cyclopalladation and chloride bridge-splitting reactions. The complexes were characterized by elemental analysis, ESI–MS and NMR. In addition, single-crystal X-ray analysis reveals that they have one-dimensional lamellar structures involving intermolecular hydrogen bonds and π–π interactions
polymer-incarcerated (PI) Pdcatalyst bearing an active phosphine ligand has been developed. This catalyst was prepared easily according to a conventional PI method (microencapsulation and cross-linking of polymer chains), and TEM images of PI Pd showed the formation of small Pd clusters dispersed on the polymer support without formation of Pd aggregates. The catalyst showed high activity in amination reactions of
已经开发出一种带有活性膦配体的新型聚合物包埋 (PI) Pd 催化剂。根据传统的 PI 方法(聚合物链的微囊化和交联),该催化剂很容易制备,PI Pd 的 TEM 图像显示形成分散在聚合物载体上的小 Pd 簇,而没有形成 Pd 聚集体。该催化剂在各种芳基氯与胺的胺化反应中表现出高活性。反应在不添加任何外部膦配体的情况下进行,通过简单过滤定量回收催化剂,并在不损失活性的情况下重复使用至少3次。