[EN] SUBSTITUTED CYCLOPROPYL-2,2'-BIPYRIMIDINYL COMPOUNDS, ANALOGUES THEREOF, AND METHODS USING SAME [FR] COMPOSÉS DE CYCLOPROPYL-2,2'-BIPYRIMIDINYL SUBSTITUÉS, ANALOGUES DE CEUX-CI, ET PROCÉDÉS LES UTILISANT
an air-stable dianthracenyl monophosphine ligand (diAnthPhos) which can be prepared in two steps from commercially available anthracene derivatives. The ligand exhibits excellent efficiency for palladium-catalyzed coupling reactions. In particular, Miyaura borylation of heterocycle-containing electrophiles can be facilitated employing the diAnthPhos ligand with a broad substrate scope and low catalyst
Visible Light-Induced Borylation of C–O, C–N, and C–X Bonds
作者:Shengfei Jin、Hang. T. Dang、Graham C. Haug、Ru He、Viet D. Nguyen、Vu T. Nguyen、Hadi D. Arman、Kirk S. Schanze、Oleg V. Larionov
DOI:10.1021/jacs.9b12519
日期:2020.1.22
photocatalytic borylation method that can effect borylation of a wide range of substrates, including strong C‒O bonds, remains elusive. Herein, we report a general, metal-free visible light-induced photocatalytic borylation platform that enables borylation of electron rich derivatives of phenols and anilines, chloroarenes, as well as other haloarenes. The reac-tion exhibits excellent functional group
硼酸是中心重要的功能基序和合成前体。可见光诱导的硼酸化可以提供结构多样化的硼酸盐,但一种广泛有效的光催化硼酸化方法可以影响包括强 C-O 键在内的多种底物的硼化,仍然难以实现。在此,我们报告了一种通用的、无金属的可见光诱导光催化硼化平台,该平台能够对苯酚和苯胺、氯芳烃以及其他卤代芳烃的富电子衍生物进行硼化。该反应表现出优异的官能团耐受性,正如一系列结构复杂底物的硼化反应所证明的那样。值得注意的是,该反应是由吩噻嗪催化的,这是一种简单的有机光催化剂,MW< 200通过质子耦合电子转移机制介导了以前无法实现的可见光诱导的苯酚衍生物单电子还原,还原电位为~-3 V vs SCE。机理研究指出了光催化剂-碱相互作用的关键作用。
Palladium-Catalyzed Methylation of Aryl, Heteroaryl, and Vinyl Boronate Esters
作者:Alexander M. Haydl、John F. Hartwig
DOI:10.1021/acs.orglett.9b00025
日期:2019.3.1
method for the direct methylation of aryl, heteroaryl, and vinyl boronate esters is reported, involving the reaction of iodomethane with aryl-, heteroaryl-, and vinylboronate esters catalyzed by palladium and PtBu2Me. This transformation occurs with a remarkably broad scope and is suitable for late-stage derivatization of biologically active compounds via the boronate esters. The unique capabilities
Iridium-Catalyzed C–H Borylation of Heteroarenes: Scope, Regioselectivity, Application to Late-Stage Functionalization, and Mechanism
作者:Matthew A. Larsen、John F. Hartwig
DOI:10.1021/ja412563e
日期:2014.3.19
from the olefin-bound complex observed during arene borylation to a species containing a bound heteroarene, leading to catalyst deactivation. Studies on the origins of the observed regioselectivity show that borylation occurs distal to N-H bonds due to rapid N-H borylation, creating an unfavorable steric environment for borylation adjacent to these bonds. Computational studies and mechanistic studies show
申请人:KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY 한국화학연구원(319980077651)
公开号:KR20210014859A
公开(公告)日:2021-02-10
본 발명은 신규한 N-헤테로고리 화합물 및 이를 포함하는 유기 발광 소자에 관한 것으로서, 본 발명에 따른 N-헤테로고리 화합물을 유기물층의 재료로 채용하는 경우 발광효율, 전력효율, 양자효율 등의 발광특성이 발광특성의 상승을 유도하여 소비전력이 개선된 유기 발광 소자를 구현할 수 있다.