99-64-9Relevant academic research and scientific papers
Oxidation of Primary Alcohols and Aldehydes to Carboxylic Acids via Hydrogen Atom Transfer
Tan, Wen-Yun,Lu, Yi,Zhao, Jing-Feng,Chen, Wen,Zhang, Hongbin
supporting information, p. 6648 - 6653 (2021/09/08)
The oxidation of primary alcohols and aldehydes to the corresponding carboxylic acids is a fundamental reaction in organic synthesis. In this paper, we report a new chemoselective process for the oxidation of primary alcohols and aldehydes. This metal-free reaction features a new oxidant, an easy to handle procedure, high isolated yields, and good to excellent functional group tolerance even in the presence of vulnerable secondary alcohols and tert-butanesulfinamides.
Method for producing m-dimethylaminobenzoic acid
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Paragraph 0013; 0014; 0015; 0016, (2017/09/02)
The invention relates to a method for producing m-dimethylaminobenzoic acid. The method comprises the steps: carrying out stirred hydrogenation on m-nitrobenzoic acid, which serves as a raw material, in a manner of taking palladium-on-carbon as a catalyst and taking a mixture of methanol and ethers as a solvent at the temperature of 30 DEG C to 60 DEG C under normal pressure (water column of 30cm to 50cm) so as to produce m-aminobenzoic acid, adding a formaldehyde solution after hydrogen absorption of nitro reduction of a first step is completed, and continuing to carry out stirred hydrogenation under the same temperature and pressure; and stopping the reaction after hydrogen absorption of hydrogenation of a second step is completed, carrying out filtration to recover the catalyst for next-time use, concentrating the filtrate to distill off the solvent, carrying out filtration to collect a product, washing the product with a small volume of water, and then, drying the product at the temperature of 100 DEG C, thereby obtaining the product, i.e., m-dimethylaminobenzoic acid. According to the method, the yield is 90% to 93%, and the melting point is 151 DEG C.
Direct carboxylation of simple arenes with CO2 through a rhodium-catalyzed C-H bond activation
Suga, Takuya,Mizuno, Hajime,Takaya, Jun,Iwasawa, Nobuharu
supporting information, p. 14360 - 14363 (2015/02/19)
Direct carboxylation of simple arenes under atmospheric pressure of CO2 is achieved through a rhodium-catalyzed C-H bond activation without the assistance of a directing group. Various arenes such as benzene, toluene, xylene, electron-rich or electron-deficient benzene derivatives, and heteroaromatics are directly carboxylated with high TONs. This journal is
Electrophilicity and nucleophilicity of commonly used aldehydes
Pratihar, Sanjay
, p. 5781 - 5788 (2014/07/22)
The present approach for determining the electrophilicity (E) and nucleophilicity (N) of aldehydes includes a kinetic study of KMNO4 oxidation and NaBH4 reduction of aldehydes. A transition state analysis of the KMNO4 promoted aldehyde oxidation reaction has been performed, which shows a very good correlation with experimental results. The validity of the experimental method has been tested using the experimental activation parameters of the two reactions. The utility of the present approach is further demonstrated by the theoretical versus experimental relationship, which provides easy access to E and N values for various aldehydes and offers an at-a-glance assessment of the chemical reactivity of aldehydes in various reactions. the Partner Organisations 2014.
Indium-mediated chemoselective deprotection and demonochlorination of 2,2,2-trichloroethyl esters
Mineno, Tomoko,Kansui, Hisao,Kunieda, Takehisa
, p. 5027 - 5030 (2008/02/10)
On treatment with indium metal, the 2,2,2-trichloroethyl carboxylates smoothly undergo deprotection to carboxylic acids and reductive demonochlorination to 2,2-dichloroethyl esters, sharply depending on their structures.
Infrared spectra and molecular structure. Part II. N-methyl- and N, N-dimethylaminobenzoic acids
Rao,Jose
, p. 447 - 456 (2007/10/05)
Infrared spectra of N-methyl- and N,N-dimethylaminobenzoic acids have been investigated. All the acids except N,N-dimethylanthranilic acid showed neutral structures in the solid state. The N,N-dimethylanthranilic acid, however, exhibited a dipolar structure with strong intramolecular hydrogen bonding in the solid state while in solution it is neutral.
