476004-79-2

Usage

Uses

2-Pinacolateborylpyrrole is a useful reagent for organic reactions.

InChI:InChI=1/C10H16BNO2/c1-9(2)10(3,4)14-11(13-9)8-6-5-7-12-8/h5-7,12H,1-4H3

Upstream product

• 109-97-7 pyrrole 
• 73183-34-3 bis(pinacol)diborane 
• 25015-63-8 4,4,5,5-tetramethyl-[1,3,2]-dioxaboralane 

Downstream Products

• 63202-71-1 2-(4′-nitrophenyl)pyrrole 
• 1459140-53-4 1-(3-cyano-4-(1H-pyrrol-2-yl)phenyl)-3-(5-(pyridin-4-yl)-1,3,4-thiadiazol-2-yl)urea 

Relevant academic research and scientific papers

Impact of Five-membered Heterocyclic Rings on Photophysical Properties including Two-photon Absorption Character

A series of dipolar-type terphenyl derivatives 13 featuring an electron donor (p-NMe2C6H4 group) and acceptor (p-NO2C6H4 group) unit was synthesized and their photophysical properties were

Immobilization of Ir(I) complex on covalent triazine frameworks for C–H borylation reactions: A combined experimental and computational study

Metal-modified covalent triazine frameworks (CTFs) have attracted considerable attention in heterogeneous catalysis due to their strong nitrogen-metal interactions exhibiting superior activity, stability and hence recyclability. Herein, we report on a post-metalation of a bipyridine-based CTFs with an Ir(I) complex for C–H borylation of aromatic compounds. Physical characterization of the Ir(I)-based bipyCTF catalyst in combination with density functional theory (DFT) calculations exhibit a high stabilization energy of the Ir-bipy moiety in the frameworks in the presence of B2Pin2. By using B2Pin2 as a boron source, Ir(I)@bipyCTF efficiently catalyzed the C–H borylation of various aromatic compounds with excellent activity and good recyclability. In addition, XAS analysis of the Ir(I)@bipyCTF gave clear evidence for the coordination environment of the Ir.

Noncovalent Interactions in Ir-Catalyzed C-H Activation: L-Shaped Ligand for Para-Selective Borylation of Aromatic Esters

An efficient strategy for the para-selective borylation of aromatic esters is described. For achieving high para-selectivity, a new catalytic system has been developed modifying the core structure of the bipyridine. It has been proposed that the L-shaped ligand is essential to recognize the functionality of the oxygen atom of the ester carbonyl group via noncovalent interaction, which provides an unprecedented controlling factor for para-selective C-H activation/borylation.

ORGANIC LIGHT-EMITTING COMPOUND AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME

The present invention relates to a novel compound having excellent light-emitting ability and hole transporting ability, and relates to an organic electroluminescent device comprising the same in at least one organic matter layer, thereby having improved

Iridium-catalyzed C-H borylation of heterocycles using an overlooked 1,10-phenanthroline ligand: Reinventing the catalytic activity by understanding the solvent-assisted neutral to cationic switch

The preformed catalyst [Ir(Cl)(COD)(1,10-phenanthroline)] (2; COD = cyclooctadiene) was found to be highly effective in a model reaction for the borylation of N-Boc-indole at the 3-position with B2pin2 (pin = pinacolato) as the borylating agent to give consistently 99% yield with 0.5 mol % catalyst loading. The corresponding in situ formed catalyst from [Ir(Cl)(COD)]2 and 1,10-phenanthroline provided very inconsistent results for the same reaction (0-94% conversion). We propose this to be due to the competing formation of a catalytically inactive cationic complex, [Ir(COD)(1,10-phenanthroline)]+Cl- (1), in a noncoordinating solvent such as octane. Complexes 1 and 2 were characterized using solid-state NMR (13C and 35Cl) in conjunction with XPS to be cationic and neutral, respectively. The X-ray crystal structure of a pentavalent neutral Ir complex, [Ir(Cl)(COD)(2,2′-bipyridine)] (3), was also obtained for comparison purposes. Using catalyst 2, the total synthesis of Meridianin G was accomplished in 87% overall isolated yield in a one-pot, three-step process.

Catalytic borylation of o-xylene and heteroarenes via C-H activation

Iridium and rhodium complexes catalyze the borylation of xylene and different heteroarenes using pinacolborane via C-H activation. Various five-membered heterocycles such as thiophene, pyrrole, thionaphthene, and indole derivatives yield the borylated pro

PROCESS FOR PRODUCTION OF HETEROARYL-TYPE BORON COMPOUNDS WITH IRIDIUM CATALYST

The present invention provides an economically and industrially superior simple process that enables the selective production of an aromatic heterocyclic monoboron compound and aromatic heterocyclic diboron compound at a satisfactory yield and in a desired ratio by reacting an aromatic heterocyclic compound and a boron compound in a single step under mild conditions while changing only the charged ratios of the raw materials. The present invention provides a production process of a heteroaryl mono- or diboron compound comprising an aromatic heterocyclic compound and a boron compound in the form of bis(pinacolate)diboron or pinacolate diborane in the presence of a iridium-containing catalyst and a ligand such as a bipyridyl ligand.

Iridium-catalyzed C-H coupling reaction of heteroaromatic compounds with bis(pinacolato)diboron: Regioselective synthesis of heteroarylboronates

The C-H coupling of aromatic heterocycles with bis(pinacolato)diboron was carried out in octane at 80-100°C in the presence of a 1/2[IrCl(COD)]2-(4,4′-di-tert-butyl-2,2′-bipyridine) catalyst (3 mol%). The reactions of five-membered substrates such as thiophene, furan, pyrrole, and their benzo-fused derivatives exclusively produced 2-borylated products, whereas those of six-membered heterocycles including pyridine and quinoline selectively occurred at the 3-position. Regioselective synthesis of bis(boryl)heteroaromatics was also achieved by using an almost equimolar amount of substrates and the diboron.