Visible light-mediated transition metal-free esterification of amides with boronic acids
作者:Hao Ding、Wan-Ying Qi、Jing-Song Zhen、Qiuping Ding、Yong Luo
DOI:10.1016/j.tetlet.2020.152444
日期:2020.10
A novel strategy for visible light-mediated esterification of amides with boronic acids in air has been described. This method is characterized by mild reaction conditions and low cost owing to no need of any catalyst, which implies high potential utility in late-stage functionalization of amide drugs and materials.
Ni(II)-Mediated Photochemical Oxidative Esterification of Aldehydes with Phenols
作者:Lu-Lu Chai、You-Hui Zhao、David James Young、Xinhua Lu、Hong-Xi Li
DOI:10.1021/acs.orglett.2c02560
日期:2022.9.30
The photopromoted, Ni-catalyzed acceptorless dehydrogenation esterification of phenols and aromatic aldehydes has been achieved in an oxidant- and external photosensitizer-free manner. This reliable and atom-economical transformation was tolerant to a wide range of functional groups and proceeded efficiently to give various aryl benzoates in moderate to high yields. Additionally, this photocatalytic
Gold-Catalyzed C–O Cross-Coupling Reactions of Aryl Iodides with Silver Carboxylates
作者:Guifang Chen、Bo Xu
DOI:10.1021/acs.orglett.3c02254
日期:2023.9.1
We have developed a C–O cross-coupling reaction of (hetero)aryl iodides with silver carboxylates via a AuI/AuIII catalytic cycle. The transformation featured exclusive chemoselectivity and moisture/air insensitivity. Aromatic and aliphatic (including primary, secondary, and tertiary) silver carboxylates are all suitable substrates. Moreover, this protocol worked well intermolecularly and intramolecularly
我们开发了(杂)芳基碘化物与羧酸银通过 Au I /Au III催化循环进行的 C-O 交叉偶联反应。该转化具有独特的化学选择性和湿气/空气不敏感性。芳香族和脂肪族(包括伯、仲和叔)羧酸银都是合适的底物。此外,该方案在分子间和分子内均表现良好。最重要的是,无论底物的电子效应和空间位阻如何,都获得了良好的产率。
Metal-Free Oxidative Formation of Aryl Esters by Catalytic Coupling of Acyl and Sulfonyl Chlorides with Arylboronic Acids
作者:Fang Liu、Akbar Sohail、Keyume Ablajan
DOI:10.1021/acs.joc.3c01151
日期:2024.1.5
synthesis of arylesters was developed through metal-free oxidation. This reaction employs stable and readily available acyl or sulfonyl chlorides and arylboronicacids as the starting materials and proceeds under mild reaction conditions without additional precious metal catalysts. This new strategy exhibits broad substrate tolerance and operational simplicity and gives diverse arylesters in moderate