259541-91-8

Upstream product

• 1722-12-9 2-chloropyrimidine 
• 402-43-7 p-trifluoromethylphenyl bromide 
• 98-56-6 4-chlorobenzotrifluoride 
• 128796-39-4 4-trifluoromethylphenylboronic acid 
• 4595-60-2 2-bromopyrimidine 

Downstream Products

• 1200123-96-1 2-(2-chloro-4-(trifluoromethyl)phenyl)pyrimidine 
• 1217189-19-9 2-(2,6-dichloro-4-(trifluoromethyl)phenyl)pyrimidine 
• 1246562-14-0 2-(pyrimidin-2-yl)-5-(trifluoromethyl)phenyl acetate 
• 1581695-28-4 2-(pyrimidin-2-yl)-5-(trifluoromethyl)benzonitrile 
• 1581719-42-7 2-(2-((triethylsilyl)ethynyl)-4-(trifluoromethyl)phenyl)pyrimidine 
• 1581719-43-8 2-(2,6-bis((triethylsilyl)ethynyl)-4-(trifluoromethyl)phenyl)pyrimidine 
• 1436430-41-9 tetraethyl 2,2′-(2-(pyrimidin-2-yl)-5-(trifluoromethyl)-1,3-phenylene)dimalonate 

Relevant academic research and scientific papers

Highly efficient green and red electroluminescence with an extremely low efficiency roll-off based on iridium(iii) complexes containing a bis(diphenylphorothioyl)amide ancillary ligand

In this study, two iridium(iii) complexes named Ir(tfpmd)2(stpip) and Ir(tfpqz)2(stpip) were synthesized, in which 2-(4-(trifluoromethyl)phenyl)pyrimidine (tfpmd) or 4-(4-(trifluoromethyl)phenyl)quinazoline (tfpqz) was used as the cyclometalated ligand and bis(diphenylphorothioyl)amide (stpip) as the ancillary ligand, respectively. The Ir(tfpmd)2(stpip) complex shows green light, peaking at 501 nm with a high phosphorescence quantum efficiency of 0.83. The organic light-emitting diode (OLED) with a double-emissive-layer structure using the (tfpmd)2(stpip) complex displays good performances with a maximum luminance (Lmax) above 39000 cd m-2, a maximum current efficiency (ηc,max) of 90.5 cd A-1, a maximum external quantum efficiency (EQEmax) of 30.8% and an extremely low efficiency roll-off. Even at the high luminance of 10000 cd m-2, the efficiency roll-off ratio is below 5%. The Ir(tfpqz)2(stpip) complex shows red light, peaking at 624 nm, and its corresponding device with a single-emissive-layer structure also shows decent characteristics with a Lmax of 33732 cd m-2, a ηc,max of 28.6 cd A-1, an EQEmax of 18.3% and also a very low efficiency roll-off. These results suggest that the green and red Ir(iii) complexes with bis(diphenylphorothioyl)amide as the ancillary ligand have the potential for use in high-efficiency OLEDs with a low efficiency roll-off.

One-Pot Palladium-Catalyzed Cross-Coupling Treble of Borylation, the Suzuki Reaction and Amination

A methodology for a sequential palladium-catalyzed cross-coupling procedure consisting of borylation, the Suzuki reaction and amination has been developed for the assembly of molecules with multi-aryl backbones. The linchpin of this development is the meta-terarylphosphine ligand, Cy*Phine, which has been employed as an air- and moisture-stable precatalyst, Pd(Cy*Phine)2Cl2, to improve the efficiency of one-pot borylation–Suzuki reactions. Additionally, the reactivity of the Pd-Cy*Phine system could be tuned to furnish a one-pot, borylation–Suzuki reaction–amination (BSA) cross-coupling treble. The methodology successfully integrated complementary conditions for three distinctly different and modular reactions. Average yields of 74–94% could be achieved for each segment that cumulatively afforded 50–84% yield over the entire three-step sequence in a single pot. (Figure presented.).

Systematic evaluation of HOMO energy levels for efficient dye regeneration in dye-sensitized solar cells

Thirty ruthenium complexes of the types [Ru(tctpy)(C^N)NCS] and [Ru(tctpy)(N^O)NCS] (C^N = cyclometalating ligand and N^O = pyridinecarboxylate and its derivatives) were synthesized and evaluated to identify the highest occupied molecular orbital (HOMO) energy level (EHOMO) for efficient dye regeneration in dye-sensitized solar cells. EHOMOof these complexes was systematically tuned by changing the electron-donating ability of the C^N and N^O ligands. For complexes with an EHOMOin the potential range more negative than 0.5 V vs. a saturated calomel electrode (SCE), the incident photon-to-current conversion efficiency (IPCE) increased with a positive shift in EHOMObut could not exceed 70%, suggesting that rapid dye regeneration is difficult. On the other hand, high IPCEs above 70% were often observed for complexes with an EHOMOmore positive than 0.5 V vs. SCE. It is thus concluded that there is a threshold for efficient electron transfer near 0.5 V vs. SCE (ΔG2≈ 0.3 eV) for the series of these sensitizers. This journal is

Ruthenium-catalyzed double-fold C-H tertiary alkoxycarbonylation of arenes using di-tert-butyl dicarbonate

An efficient ruthenium-catalyzed double-fold C-H alkoxycarbonylation of arenes was developed using di-tert-butyl dicarbonate as the tertiary esterification reagent, which leads to a direct route to valuable 2,6-dicarboxylated products. This journal is

Copper-catalyzed aromatic C-H bond halogenation with lithium halides under aerobic conditions

A concise and practical Cu-catalyzed protocol for the preparation of chloro- and bromoarenes via C-H bond activation has been developed. The advantages of this strategy are the employment of cheap Cu(NO3) 2·3H2O, LiX and O2, and its compatibility with both electron-donating and electron-withdrawing substituents on aryl rings.

Palladium-catalyzed monoselective halogenation of C-H bonds: Efficient access to halogenated arylpyrimidines using calcium halides

A wide variety of ortho-halogenated arylpyrimidines were prepared with high monoselectivity and functional-group tolerance by using calcium halides as crucial halogenating agents and cupric trifluoroacetate as oxidant in the presence of air.

Palladium-Catalyzed Regioselective C-H Bond ortho-Acetoxylation of Arylpyrimidines

An efficient and regioselective palladium-catalyzed ortho C-H acetoxylation reaction was developed to afford, ortho monoacetoxylated arylpyrimidmes in good to excellent yields by using cupric trifluoroacetate as a cocatalyst. A wide variety of oxygenated

Cobalt-catalyzed cross-coupling between in situ prepared arylzinc halides and 2-chloropyrimidine or 2-chloropyrazine

A cobalt-catalyzed cross-coupling of aryl halides with 2-chloropyrimidines or 2-chloropyrazines is reported in satisfactory to high yields. The key step of this procedure is the formation of aromatic organozinc reagents and their coupling with 2-chlorodia

Electrochemical cross-coupling between functionalized aryl halides and 2-chloropyrimidine or 2-chloropyrazine catalyzed by nickel 2,2'-bipyridine complex

2-Arylpyrimidines and 2-arylpyrazines have been obtained in good to high yields from 2-chloropyrimidine and 2-chloropyrazine and various functionalized aryl halides by electroreduction using an iron rod as the anode and a catalytic amount of nickel-bipyridine complex in a mixture of DMF and pyridine as solvent.