Retraction: A. Malik, N. Kishor Gour, S. Bhatt, R. Chandra Deka and S. L. Jain, “Visible Light-Induced Synthesis of 2-Oxazolidinones through One-Pot Coupling of Benzylamines, Epoxides and CO2,” European Journal of Organic Chemistry 2023, 26, e202201338, https://doi.org/10.1002/ejoc.202201338. The above article, published online on 08 February 2023 in Wiley Online Library (wileyonlinelibrary.com), has

The development of green and efficient C‐S bond formation methods has received significant attention from synthetic chemists because the C‐S bonds widely occurs in many important drugs and natural biological compounds. In recent years, photochemical organic conversion promoted by visible light has attracted the interest of many organic chemists. Compared with the traditional methods, visible light

A synthetic protocol for rhodium‐catalyzed, site selective C‐H amination of the betulin scaffold has been developed. Under catalytic conditions, betulin‐derived 28‐O‐sulfamate ester undergoes intramolecular C‐H amination to afford 1,2,3‐oxathiazinane‐2,2‐dione‐fused lupane triterpenoids with a C16/C22 selectivity ratio 9:1. Introduction of a C16‐substituent enables a second sequential C‐H amination

A cyclobutane ring constitutes an interesting scaffold for the development of new materials and drugs. In this work we describe the [2+2] cycloaddition of chalconoid precursors bearing fluorinated and heterocyclic moieties to produce cyclobutane derivatives in solution. The reaction is promoted by sunlight and does not require any added photocatalyst. The regio‐ and stereoselectivity output depends

Photoconvertible precursors of 2,6‐linked anthracene oligomers (trimer, tetramer, and pentamer) were synthesized through repeated Suzuki‐Miyaura cross‐coupling reactions. Upon exposure of these precursors to light at 450 nm, which correspond to the n–π* transition of diketone moieties, yellow precipitates were formed, suggesting the conversion to the corresponding anthracene oligomers from the precursors

Benzhydryl derivatives were synthesized by a new strategy involving the use of stilbenes as an electrophilic reaction partner through umpolung reactivity in a nucleophilic substitution reaction. The transformation, which requires oxidative treatment with mCPBA and the presence of 1,1,1,3,3,3‐hexafluoroisopropanol (HFIP) as an essential solvent and reaction promoter, occurs through multiple consecutive

Fluorescent probes have been used extensively in chemical biology, allowing the visual observation of bioactive compounds. While many variations of fluorescent probes that react to polar functional groups have been developed, there are few fluorescent probes that directly modify less polar compounds. In this paper, pyrene‐containing nitrile N‐oxide (Pyrene‐NO) has been designed and synthesized as a

Herein, we report the synthesis and characterization of efficient ambipolar charge‐carrier transporting deep‐red to near‐infrared (NIR) fluorophores, namely MNTFT, PNTFT, and BMNTFT, based on an asymmetric donor‐acceptor‐donor' (D‐A‐D') structure, as well as their application as non‐doped emitters in NIR organic light‐emitting diodes (OLEDs). The molecules comprise naphtho[2,3‐c][1,2,5]thiadiazole

A cascade reaction has been established that enables access to structurally diverse 2‐oxabicyclo[3.2.0]heptan‐3‐ones bearing a benzo[d]oxazol‐2(3H)‐one moiety at the bridgehead quaternary center in moderate to good yields in a single operation. The reaction illustrates the potential of 2‐hydroxycyclobutanone as a substrate for the rapid preparation of unusual and complex molecular frameworks.

Direct benzylic C(sp3)–H functionalization has emerged as a topic in organic synthesis due to its critic role in constructing complex and valuable molecules. Among the various methodologies employed, electroorganic synthesis has garnered considerable attention in diversifying benzylic C(sp3)–H functionalization. In recent years, substantial progress has been made in electrochemical benzylic C(sp3)–H

Carboxylation using stable and abundant CO2 as a carbon source would be an attractive option in synthetic organic chemistry if the use of highly reactive organometals or toxic and expensive transition metals can be avoided. Herein we report a transition‐metal‐free direct carboxylation of aryl trialkoxyboronates in supercritical CO2 (scCO2), promoted by a catalytic amount of ZnO. The use of cage‐shaped

The photocatalytic activation of sulfur hexafluoride, SF6, is an important synthetic method to access pentafluorosulfanylated organic compounds because of the non‐toxic properties of this gas. However, the redox properties of the organic substrates must fit to the photoredox cycle for the activation of SF6. Strong electron‐donating groups turned α‐phenyl styrenes into a redox‐inactive state. These

The introduction of a fluorine into aliphatic substituents of lead candidates can impart unique structural characteristics that allow fine tuning of drug interactions; therefore, mild, specific or late‐stage fluorination procedures are of growing interest in medicinal chemistry, with the potential to be applied in F‐18 radiochemistry. In this work, we demonstrate the feasibility of “reagent‐less” electrochemical

para‐Terphenoquinone (pTPQ) in which a benzenoid ring has been replaced with a heterocycle is known as heteroterphenoquinone (HTPQ). While (H)TPQs are typically non‐emissive and potentially open‐shell species, we recently reported that fully fused polycyclic HTPQs (or PHTPQs) bearing a sulfur heteroatom could either exhibit fluorescence or antiaromaticity depending on the π‐conjugation arrangement

Deuteration has gained a prominent role as a powerful method for investigating kinetic isotope effects in chemical reactions. Recent studies show that deuteration can significantly alter the pharmacokinetic and toxicological profiles of drug molecules, thereby enhancing their therapeutic efficacy. As a result, deuteration is being increasingly integrated into pharmaceutical development. At the same

Geminal diol (gem‐diol) moieties commonly exist in equilibrium with ketones or aldehydes when water is present in the system. While significant progress has been made in their structural characterization, recent studies have increasingly focused on the reactivity of gem‐diol intermediates. In parallel, gem‐diol‐type hydroxyl‐oxoammonium species have been reported as key intermediates in various reactions

The [3+2] cycloaddition (32CA) reaction of an azomethine ylide with methyl vinyl ketone in the ground and first triplet excited states has been studied within the framework of Molecular Electron Density Theory. A DFT‐based reactivity analysis indicates that, while azomethine ylide behaves as a supernucleophile in both states, vinyl ketone acts as a strong electrophile. This 32CA reaction presents a

2‐Pyridone is a crucial building block in bioactive natural products and serves as a vital intermediate for the synthesis of bioactive nitrogen‐containing heterocycles. Recent advancements in transition metal‐catalyzed C–H functionalization have enabled the direct modification of 2‐pyridones, circumventing the need for pre‐functionalization. In this study, we report a Rh(III)‐catalyzed, C6‐selective

We report the voyage of two flat, highly unsaturated systems into the third dimension. Specifically, we investigated the 1,3‐dipolar cycloadditions of 9‐diazofluorene with a rapidly growing class of strained dipolarophile—biarylcyclooctynes. We found that the initial spirocyclic 3H‐pyrazole cycloadducts are isolable, and can be subjected to controllable [1,5]‐sigmatropic shifts. These van Alphen–Hüttel

In the last decade, substances possessing the dihydroindeno[2,1‐c]fluorene scaffold showed interesting photo‐physical properties and other potential applications in electronics. The afore‐mentioned compounds belong to the family of five regioisomeric dihydroindenofluorenes, but unlike other ones, they possess angular or, in the case of higher congeners, helical shape. This review is mainly focused

The pursuit of molecular complexity is central to modern organic synthesis, as complex molecules are essential across various fields. The development of catalytic multi‐component transformation strategies provides an efficient approach for the rapid and selective construction of complex molecular frameworks. Over the past decades, N‐heterocyclic carbene (NHC) organocatalysis has emerged as a powerful

The complex [CoII(4'‑MeO‑tpy)2](PF6)2 (4'‑MeO‑tpy = 4'‐methoxy‐2,2':6',2''‐terpyridine) effectively mediates visible‐light‐driven arylation of pyrroles, 1,3,5‑trimethoxybenzene and bis(pinacolato)diborane (B2Pin2). Mechanistic studies suggest the reaction likely proceeds via a halogen atom transfer mechanism facilitated by an α‑aminyl radical. This work highlights the potential of optimizing the ligand

α,β‐unsaturated silyl esters are an important class of compounds in organic, inorganic and pharmaceutical chemistry, known for their versatility and unique reactivity. The conjugated system in these compounds enables for Michael addition reactions, making them useful intermediates in the synthesis of complex organic/inorganic molecules, including pharmaceuticals, agrochemicals, and natural products

Treatment of Lawesson's reagent with selected alkyl or aryl alkynes results in the formation of cyclization products such as 3H‐1,2,3‐dithiaphosphole‐3‐sulfide or unprecedented 1,3,2,4dithiadiphosphinane‐2,4‐disulfide derivatives. The new heterocycles are characterized spectroscopically and in two cases by crystal structure analyses. Density functional computations (PW6B95D3/6311+G(d,p)‐PCM(toluene)//B97D3/6‐31G*)