Visible-Light-Induced Direct Photocatalytic Carboxylation of Indoles with CBr4/MeOH was written by Yang, Qing-Qing;Marchini, Marianna;Xiao, Wen-Jing;Ceroni, Paola;Bandini, Marco. And the article was included in Chemistry – A European Journal in 2015.Application In Synthesis of Methyl benzofuran-2-carboxylate This article mentions the following:
Photocatalysis enables the cascade reactions of indoles and CBr4 in MeOH through a C(sp2)-H functionalization/methanolysis sequence. The title reaction provides an efficient access to indole-2- and 3-carboxylates in a single operation (no preinstallation of protecting or directing groups was required) with good yields under mild reaction conditions. In the experiment, the researchers used many compounds, for example, Methyl benzofuran-2-carboxylate (cas: 1646-27-1Application In Synthesis of Methyl benzofuran-2-carboxylate).
Methyl benzofuran-2-carboxylate (cas: 1646-27-1) belongs to benzofurans derivatives. Benzofurans are compounds with a planar structure having 10 pi electrons that include the lone pair on oxygen atom, which makes it more susceptible to electrophilic attack. Introduction of benzofurans in organic synthesis, particularly drug synthesis, involves generally the use of their metalated species as nucleophiles in addition reactions or in metal-catalysed cross-coupling reactions.Application In Synthesis of Methyl benzofuran-2-carboxylate
Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem