Directed Nickel-Catalyzed Selective Arylhydroxylation of Unactivated Alkenes under Air
作者:Yihua Wang、Cong Lin、Zongxu Zhang、Liang Shen、Boya Zou
DOI:10.1021/acs.orglett.3c00085
日期:——
An expeditious and novel nickel-catalyzedselectivearylhydroxylation of unactivatedalkenes with arylboronic acids was developed. This protocol is compatible with β,γ- and γ,δ-alkene amides, including traditionally challenging internal alkenes, to provide important β-arylethylalcohol scaffolds. The free hydroxyl group in the final product could be smoothly further transformed into other functional
Copper-Catalyzed Bifunctionalization/Annulation of Unactivated Alkene with Alkyl Bromides
作者:Cancan Feng、Yangjie Wu
DOI:10.1021/acs.joc.3c01746
日期:2023.11.3
from unactivated alkenes and alkylbromides via a Cu-catalyzed inter-/intramolecular carboamidation. This reaction proceeded smoothly under mild reaction conditions and exhibited a broad substrate scope and various functional groups. This protocol is not only compatible with 1, 2, and 3° alkylbromides but also suitable for α-bromo nitrile as well as various benzyl bromides. The mechanism exploration
β-内酰胺是生物活性化合物和药物中普遍存在的支架。在此,我们公开了一种从未活化的烯烃和烷基溴出发,通过 Cu 催化的分子间/分子内碳酰胺化反应构建 β-内酰胺的简化方法。该反应在温和的反应条件下顺利进行,并表现出广泛的底物范围和丰富的官能团。该方案不仅与 1、2 和 3° 烷基溴兼容,而且还适用于 α-溴腈以及各种苄基溴。机理探索表明涉及顺序自由基加成/还原消除。
Visible-Light-Induced Difunctionalization of 3-Butenoic Acid with Bromodifluoromethyl Heteroarylsulfones
a visible-light-induced iridium-promoted direct bifunctionalization of 3-butenoicacid with bromodifluoromethyl heteroarylsulfones. This methodology enables the concurrent introduction of difluoromethyl heteroarylsulfone and bromine groups into 3-butenoicacid under mild reaction conditions. Various α-substituted 3-butenoicacids and bromodifluoromethyl heteroarylsulfones were found to be compatible