已开发出一种用于将多种简单和杂环芳烃与芳基碘化物、溴化物和氯化物进行分子内直接芳基化的催化剂。这些反应以极好的收率发生并且具有高度选择性。对芳基碘化物底物的研究表明,由于碘化物在反应介质中的积累,会发生催化剂中毒。这可以通过添加银盐来克服,银盐也允许这些反应在较低温度下发生。该方法的效用通过咔唑天然产物的快速合成和通过直接芳基化产物的开环反应合成空间位阻四邻位取代的联芳基来说明。机理研究提供了对催化剂的深入了解 s 作用模式并显示在钯催化的简单芳烃的直接芳基化中存在动力学上显着的 CH 键裂解。从这些研究中获得的知识导致了以前无法获得的芳烃的新分子间芳基化反应的发展,为其他新的直接芳基化过程的发展打开了大门。
and heterocyclic arenes with aryl iodides, bromides, and chlorides has been developed. These reactions occur in excellent yield and are highly selective. Studies with aryl iodides substrates revealed that catalyst poisoning occurs due to the accumulation of iodide in the reaction media. This can be overcome by the addition of silver salts which also permits these reactions to occur at lower temperature
已开发出一种用于将多种简单和杂环芳烃与芳基碘化物、溴化物和氯化物进行分子内直接芳基化的催化剂。这些反应以极好的收率发生并且具有高度选择性。对芳基碘化物底物的研究表明,由于碘化物在反应介质中的积累,会发生催化剂中毒。这可以通过添加银盐来克服,银盐也允许这些反应在较低温度下发生。该方法的效用通过咔唑天然产物的快速合成和通过直接芳基化产物的开环反应合成空间位阻四邻位取代的联芳基来说明。机理研究提供了对催化剂的深入了解 s 作用模式并显示在钯催化的简单芳烃的直接芳基化中存在动力学上显着的 CH 键裂解。从这些研究中获得的知识导致了以前无法获得的芳烃的新分子间芳基化反应的发展,为其他新的直接芳基化过程的发展打开了大门。
Diphenyl derivatives and uses thereof
申请人:NOVARTIS AG
公开号:US10633350B2
公开(公告)日:2020-04-28
The present disclosure provides a compound of formula (I):
or a pharmaceutically acceptable salt thereof, and its therapeutic uses for activating a growth factor pathway, promoting wound healing, promoting tissue repair, and treating hearing loss, skeletal muscle loss, organ degeneration, tissue damage, neurodegeneration, and muscular atrophy. The disclosure further provides pharmaceutical compositions and combinations. The present disclosure also relates to the use of such compounds for research or other non-therapeutic purposes.
[EN] DIPHENYL DERIVATIVES AND USES THEREOF<br/>[FR] DÉRIVÉS DE DIPHENYLE ET UTILISATIONS ASSOCIÉES
申请人:NOVARTIS AG
公开号:WO2019053090A1
公开(公告)日:2019-03-21
The present disclosure provides a compound of formula (I): (I); or a pharmaceutically acceptable salt thereof, and its therapeutic uses for activating a growth factor pathway, promoting wound healing, promoting tissue repair, and treating hearing loss, skeletal muscle loss, organ degeneration, tissue damage, neurodegeneration, and muscular atrophy. The disclosure further provides pharmaceutical compositions and combinations. The present disclosure also relates to the use of such compounds for research or other non-therapeutic purposes.
DIPHENYL DERIVATIVES AND USES THEREOF
申请人:NOVARTIS AG
公开号:US20190077773A1
公开(公告)日:2019-03-14
The present disclosure provides a compound of formula (I):
or a pharmaceutically acceptable salt thereof, and its therapeutic uses for activating a growth factor pathway, promoting wound healing, promoting tissue repair, and treating hearing loss, skeletal muscle loss, organ degeneration, tissue damage, neurodegeneration, and muscular atrophy. The disclosure further provides pharmaceutical compositions and combinations. The present disclosure also relates to the use of such compounds for research or other non-therapeutic purposes.
Mild and efficient palladium-catalyzed intramolecular direct arylation reactions
作者:Marc Lafrance、David Lapointe、Keith Fagnou
DOI:10.1016/j.tet.2008.01.057
日期:2008.6
been evaluated in the context of intramoleculardirect arylation reactions. Under the optimal conditions, arylation of simple arenes can be performed under very mild conditions, with heating to 50 °C. The role of the pivalic acid additive is rationalized by invoking a concerted palladation–deprotonation pathway where the pivalate is behaving as either an intramolecular base from the palladium metal or