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
Silver-Catalyzed Decarboxylative Radical Azidation of Aliphatic Carboxylic Acids in Aqueous Solution
作者:Chao Liu、Xiaoqing Wang、Zhaodong Li、Lei Cui、Chaozhong Li
DOI:10.1021/jacs.5b06821
日期:2015.8.12
We report herein an efficient and general method for the decarboxylative azidation of aliphaticcarboxylicacids. Thus, with AgNO3 as the catalyst and K2S2O8 as the oxidant, the reactions of various aliphaticcarboxylicacids with tosyl azide or pyridine-3-sulfonyl azide in aqueous CH3CN solution afforded the corresponding alkyl azides under mild conditions. A broad substrate scope and wide functional
The present invention is directed to a novel taste-masking composition comprising a taste-masking effective amount of an
Angelica
root extract, which shows unexpected effectiveness in reducing an undesirable taste in a food product (e.g., a beverage, broth, or whole grain food product), a dental product, an oral hygiene product or a medicinal product.
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