Silver-Catalyzed Decarboxylative Bromination of Aliphatic Carboxylic Acids
作者:Xinqiang Tan、Tao Song、Zhentao Wang、He Chen、Lei Cui、Chaozhong Li
DOI:10.1021/acs.orglett.7b00439
日期:2017.4.7
The silver-catalyzed Hunsdiecker bromination of aliphaticcarboxylicacids is described. With Ag(Phen)2OTf as the catalyst and dibromoisocyanuric acid as the brominating agent, various aliphaticcarboxylicacids underwent decarboxylative bromination to provide the corresponding alkyl bromides under mild conditions. This method not only is efficient and general but also enjoys wide functional group
Silver-Catalyzed Decarboxylative Fluorination of Aliphatic Carboxylic Acids in Aqueous Solution
作者:Feng Yin、Zhentao Wang、Zhaodong Li、Chaozhong Li
DOI:10.1021/ja3048255
日期:2012.6.27
industries, general and site-specific C(sp(3))-F bond formations are still a challenging task. We report here that with the catalysis of AgNO(3), various aliphaticcarboxylicacids undergo efficient decarboxylative fluorination with SELECTFLUOR(®) reagent in aqueous solution, leading to the synthesis of the corresponding alkyl fluorides in satisfactory yields under mild conditions. This radical fluorination
carboxylic acid bearing three cyclohexylmethyl substituents at the α‐position, namely, tri(cyclohexylmethyl)acetic acid, is demonstrated to act as an efficient ligand source in Pd‐catalyzed intramolecularC(sp2)−H and C(sp3)−H arylation reactions. The reactions proceed smoothly under mild reaction conditions, even at room temperature due to the steric bulk of the carboxylate ligands, which accelerates the
Silver-Catalyzed Decarboxylative Allylation of Aliphatic Carboxylic Acids in Aqueous Solution
作者:Lei Cui、He Chen、Chao Liu、Chaozhong Li
DOI:10.1021/acs.orglett.6b00802
日期:2016.5.6
Direct decarboxylative radical allylation of aliphaticcarboxylicacids is described. With K2S2O8 as the oxidant and AgNO3 as the catalyst, the reactions of aliphaticcarboxylicacids with allyl sulfones in aqueous CH3CN solution gave the corresponding alkenes in satisfactory yields under mild conditions. This site-specific allylation method is applicable to all primary, secondary, and tertiary alkyl
描述了脂肪族羧酸的直接脱羧自由基烯丙基化。以K 2 S 2 O 8为氧化剂,AgNO 3为催化剂,脂肪族羧酸与烯丙基砜在CH 3 CN水溶液中的反应在温和条件下以令人满意的收率得到了相应的烯烃。此位点特定的烯丙基化方法适用于所有伯,仲和叔烷基酸,并具有广泛的官能团相容性。
Silver-Catalyzed Decarboxylative Chlorination of Aliphatic Carboxylic Acids
作者:Zhentao Wang、Lin Zhu、Feng Yin、Zhongquan Su、Zhaodong Li、Chaozhong Li
DOI:10.1021/ja210361z
日期:2012.3.7
reaction conditions, or limited scope of application. In addition, none is catalytic for aliphaticcarboxylicacids. In this Article, we report the first catalytic Hunsdiecker reaction of aliphaticcarboxylicacids. Thus, with the catalysis of Ag(Phen)(2)OTf, the reactions of carboxylicacids with t-butyl hypochlorite afforded the corresponding chlorodecarboxylation products in high yields under mild conditions