108981-92-6Relevant articles and documents
Aluminum oxide mediated C-F bond activation in trifluoromethylated arenes
Papaianina,Amsharov
, p. 1505 - 1508 (2016)
Thermally activated γ-aluminium oxide was found to be very effective for C-F bond activation in trifluoromethylated arenes. Depending on the activation degree the respective arenes can be converted either to cyclic ketones or to the respective carboxylic acids with good to excellent yields.
Room-temperature cobalt-catalyzed arylation of aromatic acids: overriding the ortho-selectivity via the oxidative assembly of carboxylate and aryl titanate reagents using oxygen
Liu, Kun-Ming,Zhang, Rui,Duan, Xin-Fang
, p. 1593 - 1598 (2016)
A room temperature phosphine or NHC ligand-free cobalt-catalyzed arylation of (hetero)aromatic acids has been developed. It involves an oxidative cross-coupling between carboxylate and aryl titanate reagents using oxygen as an oxidant, and the arylation at the position ortho, meta and para to the carboxylic acid group could all be achieved. As application, various (hetero)aromatic acids including xenalipin, tafamidis and the key intermediate for a cardioprotective compound have been efficiently synthesized.
Synthesis of seven-membered lactones by regioselective and stereoselective iodolactonization of electron-deficient olefins
Ke, Zhuofeng,Li, Ming,Liu, Yue-Jin,Luo, Xiao-Peng,Shao, You-Xiang,Tang, Pan-Ting,Wang, Liang-Neng,Wei, Yi,Zeng, Ming-Hua,Zhang, Ni-Juan
, p. 6680 - 6683 (2020/07/03)
A regio- A nd stereoselective iodolactonization of internal electron-deficient olefinic acids has been reported, which provides a straightforward access to a series of multi-functionalized seven-membered lactones containing two consecutive chiral centers. The ester substituents on the olefins played a key role in achieving high regioselectivity. This result was proved through experiments and DFT calculations.
Exploration of Biaryl Carboxylic Acids as Proton Shuttles for the Selective Functionalization of Indole C-H Bonds
Pi, Jing-Jing,Lu, Xiao-Yu,Liu, Jing-Hui,Lu, Xi,Xiao, Bin,Fu, Yao,Guimond, Nicolas
, p. 5791 - 5800 (2018/05/14)
A survey of diversely substituted 2-arylbenzoic acids were synthesized and tested for use as proton shuttle in the direct arylation of indoles with bromobenzenes. It was found that 3-ethoxy-2-phenylbenzoic acid gives superior yield and selectivity for this class of substrates.