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The development and application of traceless acceptor groups in photochemical C-C bond formation is described. This strategy was enabled by the photoexcitation of electron donor-acceptor (EDA) complexes with visible light. The traceless acceptors, which were readily prepared from amino acid and peptide feedstocks, could be used to alkylate a wide range of heteroarene and enamine donors under metal- and peroxide-free conditions. The crucial role of the EDA complexes in the mechanism of these reactions was explored through combined experimental and computational studies.
This article was published in the following journal.
Name: Chemistry (Weinheim an der Bergstrasse, Germany)
The first successful example of 3-component coupling of N-alkylanilines, terminal alkynes, and alcohols was achieved at R.T. via a visible light-mediated copper-catalyzed photoredox-hydrogen atom tran...
The localized surface plasmon resonance (LSPR) excitation in plasmonic nanoparticles has been used to accelerate several catalytic transformations under visible-light irradiation. In order to fully ha...
A visible-light-mediated radical tandem cyclization of ortho-isocyano-α-bromo cinnamates to 2-substituted indole-3-glyoxylates is achieved by formation of both C-C/C-S and C-O bonds. The reaction pro...
As a kind of intermolecular noncovalent interaction, chalcogen bonding plays a critical role in the fields of chemistry and biology. In this paper, S⋅⋅⋅S chalcogen bonds in three groups of compl...
Visible-light-induced intramolecular C-O bond formation was developed using 2,4,6-triphenylpyrylium tetrafluoroborate (TPT), which allows the regiocontrolled construction of cyclic ethers and lactones...
The purpose of this study is to learn more about the potential effects of visible light on the skin. More specifically, this study will examine whether an incandescent lamp (light bulb) or...
The Veterans Health Administration (VHA) has stated the need for a brief screening instrument that can assist with the triage of the enormous number of returning OEF/OIF veterans with conc...
The study is to compare the expression of both keratin 16 and 17 before and after application of sulforaphane on both photoprotected and photoexposed area, and to determine whether these f...
- Determine the impact and the threshold of long wavelength UVA and visible light on immediate and delayed pigment production of melanocompetent individuals. - The study basicall...
This study is conducted to overcome the problems of conventional indirect bonding technique, through investigating accuracy of two novel three dimensionally digitally printed indirect bond...
Techniques using energy such as radio frequency, infrared light, laser light, visible light, or acoustic energy to transfer information without the use of wires, over both short and long distances.
The introduction of functional (usually cloned) GENES into cells. A variety of techniques and naturally occurring processes are used for the gene transfer such as cell hybridization, LIPOSOMES or microcell-mediated gene transfer, ELECTROPORATION, chromosome-mediated gene transfer, TRANSFECTION, and GENETIC TRANSDUCTION. Gene transfer may result in genetically transformed cells and individual organisms.
An atom or group of atoms that have a positive or negative electric charge due to a gain (negative charge) or loss (positive charge) of one or more electrons. Atoms with a positive charge are known as CATIONS; those with a negative charge are ANIONS.
Light sources used to activate polymerization light-cured orthodontic adhesives (DENTAL CEMENTS). Degree of cure and bond strength depends on exposure time, wavelength, and intensity of the curing light.
A class of enzymes that catalyze the formation of a bond between two substrate molecules, coupled with the hydrolysis of a pyrophosphate bond in ATP or a similar energy donor. (Dorland, 28th ed) EC 6.