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A chiral phosphoric acid with a 2,2'‐binaphthol core was prepared that displays two thioxanthone moieties at the 3,3'‐position as light‐harvesting antennas. Despite its relatively low triplet energy, the phosphoric acid was found to be an efficient catalyst for the enantioselective intermolecular [2+2] photocycloaddition of β‐carboxyl‐substituted cyclic enones (e.r. up to 93:7). Binding of the carboxylic acid to the sensitizer is suggested by NMR studies and by DFT calculations to occur by means of two hydrogen bonds. The binding event not only enables an enantioface differentiation but also modulates the triplet energy of the substrates. [ABSTRACT FROM AUTHOR]

Visible‐light photocatalysis is a rapidly developing and powerful strategy to initiate organic transformations, as it closely adheres to the tenants of green and sustainable chemistry. Generally, most visible‐light‐induced photochemical reactions occur through single‐electron transfer (SET) pathways. Recently, visible‐light‐induced energy‐transfer (EnT) reactions have received considerable attentions from the synthetic community as this strategy provides a distinct reaction pathway, and remarkable achievements have been made in this field. In this Review, we highlight the most recent advances in visible‐light‐induced EnT reactions. Making light of synthesis: The distinctive reaction pathways provided by visible‐light‐induced energy transfer (EnT) has resulted in it receiving considerable attention. This Review discusses the most recent advances in visible‐light‐induced EnT reactions. [ABSTRACT FROM AUTHOR]

Although enantioselective catalysis under thermal conditions has been well established over the last few decades, the enantioselective catalysis of photochemical reactions is still a challenging task resulting from the complex enantiotopic face differentiation in the photoexcited state. Recently, remarkable achievements have been reported by a synergistic combination of organocatalysis and photocatalysis, which have led to the expedient construction of a diverse range of enantioenriched molecules which are generally not easily accessible under thermal conditions. In this tutorial review, we summarize and highlight the most significant advances in iminium and enamine catalysis of enantioselective photochemical reactions, with an emphasis on catalytic modes and reaction types. [ABSTRACT FROM AUTHOR]

A visible-light-induced photocatalytic aerobic oxidation/ [3+2] cycloaddition/aromatization cascade between secondary amines and isocyanides has been successfully developed. The reaction provides a general and efficient access to diversely substituted imidazoles and imidazo[1,5- a]quinoxalin-4(5H)-ones in good yields under mild conditions. [ABSTRACT FROM AUTHOR]

Two birds with one stone: Recent advances in activating two reactants simultaneously using homogeneous visible‐light photoredox catalysis have been described. The conceptually new catalytic mode will aid in the design of some green and sustainable reactions. [ABSTRACT FROM AUTHOR]

An abstract of the article "De novo Synthesis of Imidazoles by Visible-Light-Induced Photocatalytic Aerobic Oxidation/[3 + 2] Cycloaddition/Aromatization Cascade" by Quiao-Hui Deng, You-Quan Zhou, Liang-Qui Lu, Zi-Long Tang, Jia-Rong Chen and Wen-Jing Xiao is presented.

Review: 18 refs. [ABSTRACT FROM AUTHOR]

19 examples [ABSTRACT FROM AUTHOR]

Review: 853 refs. [ABSTRACT FROM AUTHOR]

The first example of sequence catalysis by merging visible light photoredox catalysis and nucleophilic catalysis is reported. [ABSTRACT FROM AUTHOR]