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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Method for preparing 2, 4, 6-trimethylbenzoic acid from mesitylene and carbon dioxide
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Paragraph 0019-0030, (2021/04/17)
The invention discloses a method for preparing 2, 4, 6-trimethylbenzoic acid from mesitylene and carbon dioxide. The method comprises the step of synthesizing 2, 4, 6-trimethylbenzoic acid by taking mesitylene as a raw material, lewis acid as a catalyst and carbon dioxide as a carbon source under certain pressure and temperature. Oxidants such as potassium permanganate are not used. The method has the highest atom utilization rate of the synthesis reaction, and has atom economy and good industrial application prospect.
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.
Carboxylation of Aryl Triflates with CO2 Merging Palladium and Visible-Light-Photoredox Catalysts
Bhunia, Samir Kumar,Das, Pritha,Nandi, Shantanu,Jana, Ranjan
supporting information, p. 4632 - 4637 (2019/06/27)
We report herein a visible-light-promoted, highly practical carboxylation of readily accessible aryl triflates at ambient temperature and a balloon pressure of CO2 by the combined use of palladium and photoredox Ir(III) catalysts. Strikingly, the stoichiometric metallic reductant is replaced by a nonmetallic amine reductant providing an environmentally benign carboxylation process. In addition, one-pot synthesis of a carboxylic acid directly from phenol and modification of estrone and concise synthesis of pharmaceutical drugs adapalene and bexarotene have been accomplished via late-stage carboxylation reaction. Furthermore, a parallel decarboxylation-carboxylation reaction has been demonstrated in an H-type closed vessel that is an interesting concept for the strategic sector. Spectroscopic and spectroelectrochemical studies indicated electron transfer from the Ir(III)/DIPEA combination to generate aryl carboxylate and Pd(0) for catalytic turnover.