14387-10-1Relevant articles and documents
Preparation method of alectinib intermediate
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Page/Page column 12-14, (2019/03/15)
The invention discloses a preparation method of 2-(4-ethyl-3-iodine) phenyl-2-methyl propionic acid as an alectinib intermediate. According to the preparation method, the operation danger class and production cost are reduced by optimizing and improving a
A General, Activator-Free Palladium-Catalyzed Synthesis of Arylacetic and Benzoic Acids from Formic Acid
Wang, Lin,Neumann, Helfried,Beller, Matthias
supporting information, p. 6910 - 6914 (2018/06/04)
A new catalyst for the carboxylative synthesis of arylacetic and benzoic acids using formic acid (HCOOH) as the CO surrogate was developed. In an improvement over previous work, CO is generated in situ without the need for any additional activators. Key to success was the use of a specific system consisting of palladium acetate and 1,2-bis((tert-butyl(2-pyridinyl)phosphinyl)methyl)benzene. The generality of this method is demonstrated by the synthesis of more than 30 carboxylic acids, including non-steroidal anti-inflammatory drugs (NSAIDs), under mild conditions in good yields.
An efficiently cobalt-catalyzed carbonylative approach to phenylacetic acid derivatives
She, Meng-Yao,Xiao, Da-Wei,Yin, Bing,Yang, Zheng,Liu, Ping,Li, Jian-Li,Shi, Zhen
, p. 7264 - 7268 (2013/08/23)
A highly efficient cobalt-catalyzed carbonylative approach to phenylacetic acid derivatives under one atmosphere pressure is reported. This methodology represents a useful extension of benzimidazole used as ligand in metal catalysis, and the catalytic mechanism has been proved by computer simulation. Notably, this new cobalt precatalyst, which promotes the carbonylation reaction dramatically and has already been used for scale-up experiment of phenylacetic acid derivatives.
Tri-n-butyltin carboxylate derivatives of para-substituted phenyl-ethanoic acids: Synthesis, characterization and X-ray structure determination
Angiolini, Luigi,Caretti, Daniele,Mazzocchetti, Laura,Salatelli, Elisabetta,Femoni, Cristina
, p. 3301 - 3307 (2007/10/03)
The tributyltin esters of 4-(ethyl)-phenyl-ethanoic acid and 4-(isopropyl)-phenyl-ethanoic acid have been prepared as model compounds of the repeating unit of the related stannylated polystyrenic derivatives. Both the products were fully characterized by proton and carbon NMR two-dimensional techniques. FT-IR spectra show in the solid state carboxylated moieties bridging R 3 Sn groups with the metal atom expanding its coordination number, this structure being destroyed in solution. The supramolecular arrangement of the products in the solid state has been investigated by X-ray diffraction, which confirms the pentacoordination at tin in both the products, and indicates a different spatial arrangement of the alkylated aryl groups, as evidenced also by the slightly different thermal properties.
Media controlled photo - Favorskii type rearrangement of α-chloro acetophenones: Synthesis of phenylacetic acids
Dhavale, Dilip D.,Mali, Vasant P.,Sudrik, Surendra G.,Sonawane, Harikisan R.
, p. 16789 - 16794 (2007/10/03)
Photolysis of substituted α-chloro acetophenones has been studied in different solvent systems wherein 1,2-aryl migration is found to be media controlled. Effect of substituents on the migratory aptitude and a direct access to phenylacetic acids, in practical yields, has been described.
Convenient Preparation of Arylacetic Acids by Tetracarbonylcobaltate Anion Catalysed Carbonylation
Rao, B. Nageswara,Adapa, Srinivas R.,Pardhasaradhi, M.
, p. 84 - 85 (2007/10/02)
Tetracarbonylcobaltate catalyst -, has been prepared in 6 hr by pressure carbonylation of cobalt salt in aq alkaline solution containing cyanide catalyst.Carbonylation of arylchloromethyl derivatives in aq methanolic solutions using this catalyst affords arylacetic acids in good yields.
4-Vinylbenzeneacetic acid
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, (2008/06/13)
A multi-step preparation of 4-vinylbenzeneacetic acid from the readily available 1,4-diethylbenzene is described. The method uses cobalt (II) catalyzed oxidation of 1,4-diethylbenzene to 4-ethylacetophenone followed by oxidative rearrangement of the latte