Herrera-Luna, Jorge C.; Diaz, David Diaz; Jimenez, M. Consuelo; Perez-Ruiz, Raul published an article in 2021. The article was titled 《Highly Efficient Production of Heteroarene Phosphonates by Dichromatic Photoredox Catalysis》, and you may find the article in ACS Applied Materials & Interfaces.SDS of cas: 3141-27-3 The information in the text is summarized as follows:
A new strategy to achieve efficient aerobic phosphorylation of five-membered heteraroenes with excellent yields using dichromatic photoredox catalysis in a gel-based nanoreactor is described here. The procedure involves visible aerobic irradiation (cold white LEDs) of a mixture containing the heteroarene halide, trisubstituted phosphite, N,N-diisopropylethylamine (DIPEA) as sacrificial agent, and catalytic amounts of 9,10-dicyanoanthracene (DCA) in the presence of an adequate gelator, which permits a faster process than at the homogeneous phase. The methodol., which operates by a consecutive photoinduced electron transfer (ConPET) mechanism, was successfully applied to the straightforward and clean synthesis of a number of different heteroarene (furan, thiophene, selenophene, pyrrole, oxazole, or thioxazole) phosphonates, extending to the late-stage phosphonylation of the anticoagulant rivaroxaban. Strategically, employment of cold white light is critical since it provides both selective wavelengths for exciting 1st DCA (blue region) and subsequently its corresponding radical anion DCA•- (green region). The resultant strongly reducing excited agent DCA•-* is capable of even activate five-membered heteroarene halides (Br, Cl) with high reduction potentials (~-2.7 V) to effect the C(sp2)-P bond formation. Spectroscopic and thermodn. studies have supported the proposed reaction mechanism. The rate of product formation was clearly enhanced in gel media because reactants can be presumably localized not only in the solvent pools but also through to the fibers of the viscoelastic gel network. This was confirmed by field-emission SEM images where a marked densification of the network was observed, modifying its fibrillary morphol. Finally, rheol. measurements showed the resistance of the gel network to the incorporation of the reactants and the formation of the desired products. In the part of experimental materials, we found many familiar compounds, such as 2,5-Dibromothiophene(cas: 3141-27-3SDS of cas: 3141-27-3)
2,5-Dibromothiophene(cas: 3141-27-3) , is mainly used as pharmaceutical intermediate and synthesis intermediate. 2,5-Dibromothiophene may be used as starting reagent for the synthesis of α,α′-didecylquater-, -quinque- and -sexi-thiophenes.SDS of cas: 3141-27-3
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary