Mild Palladium-Catalyzed C–H Alkylation Using Potassium Alkyltrifluoroborates in Combination with MnF3
摘要:
A Pd-catalyzed method for ligand-directed C-H alkylation with organoboron reagents is described. The combination of potassium organo-trifluoroborates, MnF3, and a Pd-II catalyst effects pyridine and amide-directed C-H alkylation. These reactions proceed under mild conditions (25-40 degrees C in weakly acidic media), are effective for installing methyl and 1 degrees alkyl groups, and do not require promoters such as benzoquinone.
[EN] INHIBITORS OF HUMAN IMMUNODEFICIENCY VIRUS REPLICATION<br/>[FR] INHIBITEURS DE LA RÉPLICATION DU VIRUS DE L'IMMUNODÉFICIENCE HUMAINE
申请人:VIIV HEALTHCARE UK NO 5 LTD
公开号:WO2020095176A1
公开(公告)日:2020-05-14
Compounds and pharmaceutically acceptable salts thereof, and compositions and methods for treating human immunodeficiency virus (HIV) infection are set forth.
化合物及其药用可接受的盐,以及用于治疗人类免疫缺陷病毒(HIV)感染的组合物和方法被阐明。
METALLO-BETA-LACTAMASE INHIBITORS
申请人:Merck Sharp & Dohme Corp.
公开号:US20160333021A1
公开(公告)日:2016-11-17
The present invention relates to compounds of formula (I) that are metallo-β-lactamase inhibitors, the synthesis of such compounds, and the use of such compounds for use with β-lactam antibiotics for overcoming resistance.
Metal-free C–H alkylation of heteroarenes with alkyltrifluoroborates: a general protocol for 1°, 2° and 3° alkylation
作者:Jennifer K. Matsui、David N. Primer、Gary A. Molander
DOI:10.1039/c7sc00283a
日期:——
A photoredox-catalyzed C–H functionalization of heteroarenes using a variety of primary, secondary, and tertiary alkyltrifluoroborates is reported. Using Fukuzumi's organophotocatalyst and a mild oxidant, conditions amenable for functionalizing complex heteroaromatics are described, providing a valuable tool for late-stage derivatization. The reported method addresses the three major limitations of
据报道,使用各种伯,仲和叔烷基三氟硼酸酯进行光氧化还原催化的杂芳烃的CH官能化。描述了使用Fukuzumi的有机光催化剂和温和的氧化剂,适合于功能化复杂杂芳族化合物的条件,为后期衍生化提供了有价值的工具。报告的方法解决了先前报道的光氧化还原介导的Minisci反应的三个主要局限性:(1)使用超化学计量的自由基前体,(2)反复选择性,以及(3)引入昂贵的光催化剂。另外,使用了许多前所未有的复杂烷基,从而增加了Minisci化学可利用的化学空间。为了展示后期功能化中的应用程序,合成了奎宁和喜树碱类似物。最后,进行了NMR研究以提供合理的杂芳基活化作用,该活化作用允许使用单当量的自由基前体,并且还提高了区域选择性。因此,在酸催化剂和BF 3的存在下观察到1 H和13 C NMR观察到独特的杂芳基物质。
[EN] FUSED FURANS FOR THE TREATMENT OF HEPATITIS C<br/>[FR] FURANES FUSIONNÉS POUR LE TRAITEMENT DE L'HÉPATITE C
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2014159559A1
公开(公告)日:2014-10-02
The disclosure provides compounds of formula I or II, including their salts, as well as compositions and methods of using the compounds. The compounds have activity against hepatitis C virus (HCV) and may be useful in treating those infected with HCV. [
Ir(<scp>iii</scp>)-catalyzed<i>ortho</i>C–H alkylations of (hetero)aromatic aldehydes using alkyl boron reagents
作者:Xiao-Yang Chen、Erik J. Sorensen
DOI:10.1039/c8sc03606c
日期:——
Transition-metal-catalyzed C–H alkylation reactions directed by aldehydes or ketones have been largely restricted to electronically activated alkenes. Herein, we report a general protocol for the Ir(III)-catalyzed ortho C–H alkylations of (hetero)aromatic aldehydes using alkyl boron reagents as the coupling partner. Featuring aniline as an inexpensive catalytic ligand, the method was compatible with