Intermolecular [2π+2σ]-photocycloaddition enabled by triplet energy transfer was written by Kleinmans, Roman;Pinkert, Tobias;Dutta, Subhabrata;Paulisch, Tiffany O.;Keum, Hyeyun;Daniliuc, Constantin G.;Glorius, Frank. And the article was included in Nature (London, United Kingdom) in 2022.Related Products of 167631-84-7 This article mentions the following:
For more than one century, photochem. [2+2]-cycloadditions have been used by synthetic chemists to make cyclobutanes, four-membered carbon-based rings. In this reaction, typically two olefin subunits (two π-electrons per olefin) cyclize to form two new C-C σ-bonds. Although the development of photochem. [2+2]-cycloadditions has made enormous progress within the last century, research has been focused on such [2π+2π]-systems, in which two π-bonds are converted into two new σ-bonds. Here an intermol. [2+2]-photocycloaddition that uses bicyclo[1.1.0]butanes as 2σ-electron reactants was reported. This strain-release-driven [2π+2σ]-photocycloaddition reaction was realized by visible-light-mediated triplet energy transfer catalysis. A simple, modular and diastereoselective synthesis of bicyclo[2.1.1]hexanes from heterocyclic olefin coupling partners, namely coumarins, flavones and indoles, is disclosed. Given the increasing importance of bicyclo[2.1.1]hexanes as bioisosteres-groups that convey similar biol. properties to those they replace-in pharmaceutical research and considering their limited access, there remains a need for new synthetic methodologies. Applying this strategy enabled to extend the intermol. [2+2]-photocycloadditions to σ-bonds and provides previously inaccessible structural motifs. In the experiment, the researchers used many compounds, for example, Methyl 5-fluoro-1H-indole-2-carboxylate (cas: 167631-84-7Related Products of 167631-84-7).
Methyl 5-fluoro-1H-indole-2-carboxylate (cas: 167631-84-7) belongs to indole derivatives. Indole exists overwhelmingly in the 1H-indole form as do other simple indoles. In addition to indole, the strain-release chemistry worked for numerous substrates including amines, alcohols, thiols, carboxylic acids, imidazoles, and pyrazoles.Related Products of 167631-84-7
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Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles