Showing papers in "Asian Journal of Organic Chemistry in 2017"

TL;DR: In this article, a focus review summarizes recent developments in metal-catalyzed direct difluoromethylation reactions, including CF2H and CF3H.

TL;DR: Recently, visible-light photoredox decarboxylative coupling reactions have become an important chemical transformation because of their wide substrate scope, mild reaction conditions, high efficiency, and practicability as discussed by the authors.

TL;DR: This review summarizes recent developments in palladium-catalyzed alkene carboalkoxylation and carboamination reactions and the applications to the synthesis of natural products and other biologically relevant compounds are discussed.

TL;DR: In the field of synthetic organic chemistry, more and more groups are pursuing visible-light-mediated chemical transformations as mentioned in this paper, which has become a powerful tool for constructing new chemical bonds and has shown wide application prospects in organic synthesis.

TL;DR: In this paper, a review focuses on the formation of carbon-nitrogen linkages and describes some recent advances in redox reactions that involve elemental sulfur and molecular iodine as excellent reagents and catalysts.

TL;DR: In this article, the authors summarize advances in photoredox catalysis that involve organophosphorus chemistry and discuss the shortcomings and possible future trends of this chemistry, as well as the shortcomings.

TL;DR: Asymmetric construction of all-carbon quaternary stereogenic centers represents one of the most challenging tasks in organic synthesis, and has drawn continuous attention from the synthetic community as discussed by the authors, allowing efficient creation of diverse structural architectures.

TL;DR: Both classes of the newly synthesized organoselenium compounds present antioxidant activity, with emphasis on the 3-(organylselanyl)-1 H-indoles, which opens a wide range of biological applications where the reduction of oxidative stress is essential.

TL;DR: The pyrene-tethered carborane CBEP having rapid and drastic luminescent chromic properties was synthesized in this paper, where it was found that CBEP showed orange emission at room temperature caused by intramolecular charge transfer in the solid state, while green emission from excimer was observed at 77 K.

TL;DR: A synthetic strategy for an iodine-mediated sulfonylation of quinoline N-oxides has been developed in this article, where a wide variety of 2-sulfonyl quinoloxides derivatives were synthesized by reacting various quinedoxides with different sodium sulfinates in the presence of sub-stoichiometric amounts of I2 in one pot.

TL;DR: The synthesis of aryne intermediates from ortho-(trimethylsilyl)aryl triflates by employing a fluoride source, first reported by Kobayashi's group, has provided a new avenue for the simultaneous construction of two sigma bonds on a benzene ring by inserting an arynes into the sigma bond in a more convenient manner as discussed by the authors.

TL;DR: In this article, a visible-light-driven cooperative catalysis between dicyanopyrazine-derived chromophore (DPZ) and N-hydroxyimide has been developed.

TL;DR: A Cu-catalyzed highly selective aerobic oxidative coupling reaction of hydrazines and amines has been achieved with the use of 1,4-diazabicyclo[ 2.2.2]octane bis(sulfur dioxide) (DABSO) as sulfonyl group source, which provides an easy and practical strategy for the preparation of sulfonamides.

TL;DR: A new aerobic oxidative coupling method to construct S-N/S-S bonds is developed, which uses TEMPO as the catalyst, and O2 as the oxidant, and shows the great potential in organic synthesis.

TL;DR: In this paper, a general and efficient method for the selenium catalyzed cyclofunctionalization reaction of alkenoic acids and alkenols is presented, where hydrogen peroxide was used as the green oxidant and all the products were obtained in very good yields.

TL;DR: A photoredox-catalyzed trifluoromethylthiolation process of aromatic alkenes has been developed in this article, which induces a single-step, regioselective installation of a CF3S and a hydroxy or an alkoxy group onto vicinal carbon atoms through redox neutral processes.

TL;DR: Visible-light-induced trifluoromethylation reactions of alkenes with CF3I in the presence of Nile red, which acted as an organic photosensitizer, have been developed.

TL;DR: In this article, a simple protocol for the catalytic synthesis of quinazolines in presence of cost-effective and reusable mesoporous ZrO2 supported Cu2O (Cu2ZrO3) catalyst was revealed.

TL;DR: In this article, a series of CO2 adducts of α-carbon alkylated N-heterocyclic olefins (ANHOs-CO2) were synthesized and characterized by single-crystal X-ray diffraction analysis.

TL;DR: In this article, an expedient and metal-free synthetic protocol for construction of benzimidazoles has been developed from o-phenylenediamine and benzylamine using imidazolium cation-based ionic liquid as the reaction medium.

TL;DR: An efficient and convenient cobalt-promoted annulation reaction has been established for the synthesis of biologically relevant phosphaisoquinolin-1-ones, which represents the first example of cobalt promoted C-H/N-H functionalization of aryl phophinamides with allenes.

TL;DR: In this paper, an efficient and convenient synthesis of pyrrolo[1,2-a]quinoxalines from 1-(2-aminoaryl)pyrroles and arylacetic acids has been described by using a combination of CuSO4 as the catalyst and 2,2'-bipyridyl as the ligand in the presence of O2 as an oxidant.

TL;DR: An efficient method for the synthesis of 1,2-dihydropyridine derivatives from simple and readily available aromatic ketones, DMF, amines and propargylic alcohols has been developed via a Bronsted-acid-catalyzed multicomponent one-pot reaction.

TL;DR: A visible-light photoredox catalyzed ring-opening functionalization of tetrahydroisoquinolines with bisindole alkylation has been developed, which expedites a new vista for the synthesis of bis(indolyl)methane derivatives as discussed by the authors.

TL;DR: Cobalt-catalyzed alkylation-peroxidation of alkenes with 1,3-dicarbonyl compounds and T-hydro was developed in this paper.

TL;DR: In this paper, the authors have highlighted and summarized recent radical reactions promoted by iron complexes, and their application in organic reactions, including photoredox chemistry for the generation of radical species.

TL;DR: A palladium(II)-porphyrin catalytic system was developed for the Suzuki-Miyaura cross-coupling of bromides with potassium aryl trifluoroborate in water as mentioned in this paper.

TL;DR: In this article, a focus review highlights the application of thiol-ene (click) chemistry for the production of diverse materials derived from terpenes and discusses the current advances on their development in synthetic organic chemistry are initially discussed.

TL;DR: In this paper, a mild and efficient method for the synthesis of thiosulfonates has been developed through CuI-catalyzed reductive coupling of arenesulfonyl chlorides using Na2SO3 or NaHSO3 as the terminal reductant under nitrogen atmosphere at room temperature.

TL;DR: This work employed aldehydes as the coupling partners in the preparation of quinazolines and employed visible light, molecular oxygen, and a commercially available photocatalyst, all of which are environmentally friendly.