480-63-7Relevant articles and documents
Pinkus et al.
, p. 2649 (1967)
Electrophilic aromatic substitution of arenes with CO2 mediated by R3SiB(C6F5)4
Konno, Megumi,Chiba, Masafumi,Nemoto, Koji,Hattori, Tetsutaro
, p. 913 - 914,2 (2012)
The FriedelCrafts- type carboxylation of arenes has been achieved by activating CO2 with silylium borates. The reaction exhibits broader substrate applicability than does our previously reported AlX3/R 3SiX-mediated carboxylation.
Effect of cations, substrates and temperature on the microwave-assisted saponification of benzoic and mesitoic esters
Perreux, Laurence,Loupy, Andre
, p. 361 - 368 (2003)
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An efficient chromium(iii)-catalyzed aerobic oxidation of methylarenes in water for the green preparation of corresponding acids
Jiang, Feng,Liu, Shanshan,Wei, Yongge,Yan, Likai,Yu, Han,Zhao, Wenshu
supporting information, p. 12413 - 12418 (2021/09/28)
A highly efficient method to oxidize methylarenes to their corresponding acids with a reusable Cr catalyst was developed. The reaction can be carried out in water with 1 atm oxygen and K2S2O8as cooxidants, proceeds under green and mild conditions, and is suitable for the oxidation of both electron-deficient and electron-rich methylarenes, including heteroaryl methylarenes, even at the gram level. The excellent result, together with its simplicity of operation and the ability to continuously reuse the catalyst, makes this new methodology environmentally benign and cost-effective. The generality of this methodology gives it the potential for use on an industrial scale. Differing from the accepted oxidation mechanism of toluene, GC-MS studies and DFT calculations have revealed that the key benzyl alcohol intermediate is formed under the synergetic effect of the chromium and molybdenum in the Cr catalyst, which can be further oxidized to afford benzaldehyde and finally benzoic acid.
Pd(II) porphyrins: Synthesis, singlet oxygen generation and photoassisted oxidation of aldehydes to carboxilic acids
Pandey, Vijayalakshmi,Jain, Drishti,Pareek, Nitesh,Gupta, Iti
, (2020/01/08)
The synthesis and spectral studies of A3B and A2B2 type porphyrins and their Pd(II) complexes are reported. The meso-positions on porphyrin macrocycle are substituted with pentafluorophenyl and N-butylcarbazole or triphenylamine groups. Pd(II) porphyrins displayed decent phosphorescence ~670 nm and are able to produce singlet oxygen by type II pathway, after photoirradiation. The calculated singlet oxygen quantum yields for Pd(II) porphyrins are (ΦΔ = 30%–63%). The catalytic application of Pd(II) porphyrins towards photoassisted aerobic oxidation of aromatic aldehydes to carboxylic acids is demonstrated.
Preparation method of 2,4,6-trimethyl benzoic acid
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Paragraph 0025-0030, (2019/11/13)
The invention provides a preparation method of 2,4,6-trimethyl benzoic acid. The preparation method of the 2,4,6-trimethyl benzoic acid comprises the following steps that step (1) a Friedel-Crafts reaction is carried out, specifically, 1,3,5-trimethylbenzene is used as a raw material and subjected to the Friedel-Crafts reaction with trichloro-acetic chloride under the action of a catalyst; and step (2) a hydrolysis reaction is carried out, specifically, a product obtained in the step (1) is hydrolyzed under the acidic condition to obtain the 2,4,6-trimethyl benzoic acid. The preparation methodof the 2,4,6-trimethyl benzoic acid has the advantages of high reaction conversion, less pollution, improved yield and purity of the product and the like, and is suitable for industrial production.