Abstract Photoinduced aryl radical generation is a powerful strategy in organic synthesis that facilitates the formation of diverse carbon‐carbon and carbon‐heteroatom bonds. The synthetic applications photoinduced complex compounds, including natural products, physiologically significant molecules, functional materials, have received immense attention. An overview current developments production methods their uses given this article. A generalized idea how to choose reagents approach for...

Organic photocatalytic knoevenagel condensation: Rose bengal photosensitized Knoevenagel condensation protocol for both aldehyde and ketones are described in aqueous medium.

Abstract The use of halogen bonding interactions as an alternative to acid and metal catalysts for substrate activation has gained popularity in recent years. In this work we demonstrate a bond assisted chalcones under visible light irradiation the Friedel‐Crafts reaction with indole yield β ‐indolylketones. simple scalable protocol uses readily available CBr 4 catalyst. targets are produced 31–94% excellent functional group tolerance. proposed mechanism is supported by UV‐vis, fluorescence,...

The visible-light-promoted catalyst-free condition has been demonstrated for self- and cross-coupling reactions of thiols in an ambient atmosphere. Further, synthesis β-hydroxysulfides is accomplished under very mild conditions involving the formation electron donor-acceptor (EDA) complex between a disulfide alkene. However, direct reaction thiol with alkene via thiol-oxygen co-oxidation (TOCO) failed to produce desired compounds high yields. protocol was successful several aryl alkyl...

Photoinduced CC bond cleavage by the HAT mechanism: photoinitiated catalyst-free for regeneration of carbonyl compounds from electron-deficient conjugated alkenes is developed as a deprotection strategy in an aqueous medium.

The conversion of alkenes to carbonyl constituents via the cleavage C═C bond is unique due its biological and pharmacological significance. Though a number oxidative protocols have been demonstrated for terminal electron-rich alkene systems, none them were optimized electron-deficient conjugated alkenes. In this work, covalent organic framework containing triphenylamine triazine units was revealed cleave under very mild conditions involving visible light irradiation photoredox property. can...

Abstract Light promoted two‐step one‐pot syntheses of quinoxalines and imidazo[1,2‐a]pyridines from alkynes alkenes, respectively under mild conditions are described. The conversions occur via the formation α,α′‐dibromo ketones or α‐bromo on irradiation with UV LED fluorescent black light (380–390 nm) in acetonitrile/water mixture. This protocol does not require sensitizer catalyst additives. is a new entry synthetic methods available for quinoxaline imidazopyridine derivatives offers wide...

By harnessing the reactivity of alkynes and alkenes under photochemical conditions, novel pathways have been unlocked to construct N -heterocyclic compounds, allowing for more efficient sustainable synthesis.

The thiol–ene reaction leading to a series of thioether derivatives by simple metal and oxidant free visible light promoted photosensitized protocol, following anti‐Markonikov hydrothiolation unactivated aryl alkyl olefins at room temperature is demonstrated. Benzil served as green photosensitizer in this white LED lights source. This radical based operationally tolerates wide variety functional groups present olefins.

A novel heterostructure metal-insulator-semiconductor (MIS) diode is proposed and studied theoretically to examine the effect of illumination on characteristics device. The capacitance structure has been calculated in dark as well various illuminated conditions. It found that MIS can be controlled by varying incident light intensity. By incorporating capacitor tuned circuit an oscillator it will possible convert intensity-modulated optical signal. device also expected find useful application...

Abstract Herein, we report the fabrication of α ‐ Fe 2 O 3 /TiO hybrid structures in form microrods, microtubes and nanorods by co‐precipitation method via wet chemical method. The combination α‐ mixed phase (anatase rutile) TiO as structure not only enhances light absorption ability but also facilitates charge separation resulting effective dye degradation. detailed studies photocatalytic degradation on system were carried out to understand mechanism. exhibited best performances...

Organic photocatalysts play a pivotal role in advancing green and sustainable chemistry by enabling efficient selective photochemical transformations reducing the need for traditional hazardous reagents energy-intensive processes. This work uses donor-acceptor natures, steric effects, conjugation lengths of six benzothiadiazole (BTD) based organic dyes (PC1-PC6) to control their charge transfer (CT) locally excited (LE) states. Thus, effective photosensitization photoredox characteristics...

A new metal-insulator-semiconductor (MIS) diode structure is proposed and studied theoretically to examine the effect of illumination on characteristics device. The capacitance calculated in dark as well various illuminated conditions. It found that can be controlled by varying incident light intensity. By incorporating capacitor tuned circuit an oscillator it will possible convert intensity modulated optical signal corresponding frequency electrical signal. device also expected find useful...