Since the seminal studies from the groups of MacMillan, Stephenson and Yoon, visible light (400‐700 nm) photoredox catalysis has been established as a powerful strategy to facilitate activation of organic molecules and invention of novel synthetic methodologies. Indeed, recent days, this protocol enables the syntheses of diversely functionalized organic molecules such as coerulescines, pseudotabersonines, drugs, agro chemicals, etc. Generally, activation of the redox‐active functional groups of the radical precursors including diazonium salts, iodoniumsalts, sulfoniumsalts, phosphate esters, amines and sulfonyl chlorides is achieved via single‐electron transfer from a photocatalyst excited by visible light irradiation sources. To date, some important reviews are available that summarize the visible light photoredox catalyses of various classes of organic compounds. To the best of our knowledge, however, there is still no review article exclusively discourses about the visible light induced productions and applications of radical species of sulfonyl chlorides (AASO2Cl, AA=alkyl/aryl). Therefore, in this review, we provide an overview on the visible light assisted procedures employed for the production of radical intermediates from sulfonyl chlorides. In addition, here we account the applications of these radical species in the syntheses of bi(hetero)aryls, difluoromethyl lactones, difluoromethyl pyrrolidines, polycyclic aromatic compounds, sulfones, trifluoromethyl (hetero)aryls, α‐trifluoromethyl ketones and so on.

A novel and efficient method for the regioselective nitration of a series of aliphatic and aromatic carboxylic acids to their corresponding nitro compounds using nitronium tetrafluoroborate and silver carbonate in dimethylacetamide has been described. This transformation is believed to proceed via the alkyl-silver or aryl-silver intermediate, which subsequently reacts with the nitronium ion to form nitro substances. Mild reaction conditions, tolerant of a broad range of functional groups, and formation of only the ipso-nitrated products are the key features of this methodology when compared to known methods for syntheses of nitroalkyls and nitroarenes.

A metal-free approach for the synthesis of buta-1,3-dienes from olefins using visible-light and catalytic amounts of DDQ is disclosed.

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Silver(I)-Promoted ipso-Nitration of Carboxylic Acids by Nitronium Tetrafluoroborate. -A novel and efficient method for the regioselective nitration of a series of aliphatic and aromatic carboxylic acids to their corresponding nitro compounds using nitronium tetrafluoroborate and silver carbonate in dimethylacetamide is reported. This transformation probably proceeds via an alkyl/aryl-silver intermediate, which subsequently reacts with the nitronium ion to form nitro substances. Mild reaction conditions, tolerance of a broad range of functional groups, and formation of only the ipso-nitrated products are the key features of this methodology compared to other known methods for the syntheses of nitroalkyls and nitroarenes. -(NATARAJAN*, P.; CHAUDHARY, R.; VENUGOPALAN, P.; J. Org. Chem. 80 (2015) 21, 10498-10504, http://dx.