4424-25-3Relevant academic research and scientific papers
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.
Modulation of thermo-transient receptor potential (thermo-TRP) channels by thymol-based compounds
Ortar, Giorgio,Morera, Ludovica,Schiano Moriello, Aniello,Morera, Enrico,Nalli, Marianna,Di Marzo, Vincenzo,De Petrocellis, Luciano
supporting information; experimental part, p. 3535 - 3539 (2012/07/03)
A series of thirty-three thymol, p-cymene-3-carboxylic acid, and 3-amino-p-cymene derivatives was synthesized and tested on TRPA1, TRPM8, and TRPV3 channels. Most of them acted as strong modulators of TRPA1, TRPM8, and TRPV3 channels with EC50 and/or IC50 values distinctly lower than those of thymol and related monoterpenoids. Some of the compounds examined, that is, 3c, 4e, f, 6b, and 8b exhibited an appreciable subtype-selectivity.
Palladium-catalyzed hydroxycarbonylation of aryl and vinyl triflates by in situ generated carbon monoxide under microwave irradiation
Lesma, Giordano,Sacchetti, Alessandro,Silvani, Alessandra
, p. 594 - 596 (2007/10/03)
An operationally simple hydroxycarbonylation of aryl and vinyl inflates to the corresponding carboxylic acids with a palladium-mediated microwave system was carried out in water. Georg Thieme Verlag Stuttgart.
