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The first photoredox-catalyzed defluoroborylation of polyfluoroarenes with NHC-BH has been facilely achieved at room temperature via a single-electron-transfer (SET)/radical addition pathway. This new strategy makes full use of the advantage of photoredox catalysis to generate the key boryl radical via direct activation of a B-H bond. Good functional group tolerance and high regioselectivity offer this protocol incomparable advantages in preparing a wide array of valuable polyfluoroarylboron compounds. Moreover, both computational and experimental studies were performed to illustrate the reaction mechanism.
This article was published in the following journal.
Name: Organic letters
An efficient visible light-induced rhodium(I)-catalyzed regioselective borylation of aromatic C H bonds is reported. The photocatalytic system is based on a single NHC-Rh(I) complex capable of both ha...
Boronic acids are centrally important functional motifs and synthetic precursors. Visible light-induced borylation may provide access to structurally diverse boronates, but a broadly-efficient photoca...
Fluorinated organoboranes serve as versatile synthetic precursors for the preparation of value-added fluorinated organic compounds. Recent progress has been mainly focused on the transition-metal cata...
Limited by the chemical inertness of CO2 and high dissociation energy of the C=O bond, photocatalytic CO2 conversion is highly challenged. Herein, we prepare the ultrathin oxygen-modified h-BN (O/BN) ...
We report well-defined Ti(III) metallocene complexes Cp*TiMe() and Cp*TiH () (Cp* = η-C5Me5) as the first isolable early transition metal precatalysts for the dehydropolymerization of amine-boranes R...
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 purpose of this study is to compare the clinical performance of three dental adhesive systems used to bond Class V cavity fillings in adult teeth.
The main objective of this project is examining whether there is a relationship between preterm delivery and parental' problematic emotional bond in the early postpartum period. The secon...
Damage to teeth from decay or previous old silver fillings can be repaired with tooth-coloured filling materials that stick to the tooth. These materials have been around for some years an...
The aim of this randomized, controlled, prospective clinical trial was to evaluate the performances of two different universal adhesives and an etch&rinse adhesive in restoration of non-ca...
The collective name for the boron hydrides, which are analogous to the alkanes and silanes. Numerous boranes are known. Some have high calorific values and are used in high-energy fuels. (From Grant & Hackh's Chemical Dictionary, 5th ed)
Derivatives of ERGOSTEROL formed by ULTRAVIOLET RAYS breaking of the C9-C10 bond. They differ from CHOLECALCIFEROL in having a double bond between C22 and C23 and a methyl group at C24.
Derivative of 7-dehydroxycholesterol formed by ULTRAVIOLET RAYS breaking of the C9-C10 bond. It differs from ERGOCALCIFEROL in having a single bond between C22 and C23 and lacking a methyl group at C24.
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.
Enzymes of the isomerase class that catalyze the oxidation of one part of a molecule with a corresponding reduction of another part of the same molecule. They include enzymes converting aldoses to ketoses (ALDOSE-KETOSE ISOMERASES), enzymes shifting a carbon-carbon double bond (CARBON-CARBON DOUBLE BOND ISOMERASES), and enzymes transposing S-S bonds (SULFUR-SULFUR BOND ISOMERASES). (From Enzyme Nomenclature, 1992) EC 5.3.
A diagnostic test is any kind of medical test performed to aid in the diagnosis or detection of disease. For example: to diagnose diseases to measure the progress or recovery from disease to confirm that a person is free from disease Clin...