582-91-2

Upstream product

• 403-43-0 4-fluorobenzoyl chloride 
• 872-50-4 1-methyl-pyrrolidin-2-one 
• 456-06-4 4-fluorobenzoyl hydrazide 
• 451-46-7 4-fluorobenzoic acid ethyl ester 

Downstream Products

• 324-81-2 2,5-bis(p-fluorophenyl)-1,3,4-oxadiazole 
• 837429-74-0 3,5-bis-(4-fluoro-phenyl)-4-(4-hexyloxy-phenyl)-4H-[1,2,4]triazole 
• 1735-33-7 3,6-bis(4-fluorophenyl)-1,2,4,5-tetrazine 
• 1091602-96-8 C₃₂H₂₂F₂N₄ 
• 146898-59-1 3,5-bis(4-fluorophenyl)-4-phenyl-4H-1,2,4-triazole 
• 1038410-94-4 3,5-bis(4-fluorophenyl)-4H-1,2,4-triazole 
• 1346684-67-0 6-fluoro-2,3-diphenylisoquinolin-1(2H)-one 
• 36342-48-0 N'-(chloro(4-fluorophenyl)methylene)-4-fluorobenzohydrazonoyl chloride 

Relevant academic research and scientific papers

Rapid and Atom Economic Synthesis of Isoquinolines and Isoquinolinones by C–H/N–N Activation Using a Homogeneous Recyclable Ruthenium Catalyst in PEG Media

Herein, we report an atom-efficient, rapid, green, and sustainable approach to synthesize isoquinolines and isoquinolinones using a homogeneous recyclable ruthenium catalyst in PEG Media assisted by microwave energy. Dibenzoylhydrazine was used for C–H/N–N activation reactions for the first time in combination with ketazine as oxidizing directing groups for annulation reactions with internal alkynes. The developed protocol is environmentally benign due to significantly shortened times with an easy extraction method, higher atom economy, external oxidant and silver or antimony salt free conditions, applicability to a gram scale synthesis, use of biodegradable solvent and wide substrate scope with higher product yields. Moreover, it is worth noting that the established methodology allowed reuse of the catalytic system for up to five successive runs with minimal loss in activity.

Synthesis of α-aminocarbonyl compounds via hetero dielsalder reaction

A synthetic route to α-aminoketone derivatives via a hetero DielsAlder reaction is described. Diacylhydrazine was oxidized by tert-butyl hypochlorite in the presence of pyridine. After evaporation, the hetero DielsAlder reaction with diene was carried out without isolation of the azodicarbonyl compound. Quantitative hetero DielsAlder reaction was possible with 1 equivalent of diene when Hf(OTf)4 or AgOTf was used as the catalyst. The NN bond of the product was cleaved by SmI2-reduction in the presence of tert-BuOH in THF. Further, ozonolysis of the C=C double bond afforded the α-aminoketone derivative in excellent yield.

Organometallic complex and light-emitting element, light emitting device and electronic device (by machine translation)

A first object is to provide an organometallic complex capable of exhibiting phosphorescence. In General Formula (G1), at least one substituent of R11 to R14 represents any of a halogen group, a haloalkyl group having 1 to 4 carbon atoms, and a cyano group. At least one substituent of R15 to R19 represents any of a halogen group, a haloalkyl group having 1 to 4 carbon atoms, and a cyano group. R20 represents any of an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, an aryl group having 6 to 12 carbon atoms, and a heteroaryl group having 4 to 10 carbon atoms. M is either a Group 9 element or a Group 10 element. When M is a Group 9 element, n is 3, and when M is a Group 10 element, n is 2.

Chemical linkage functions of poly(ether imide)s on the resistive switching memory effects

A series of aromatic poly(ether imide)s, AZTA-PEIs containing triphenylamine and 1,2,4-triazole moieties are prepared and characterized. All the polymers with inherent viscosity from 0.58 to 1.1 dL/g show glass transition temperatures in the range of 250-278 °C. Resistive switching memory devices are constructed based on the processable poly(ether imide) (AZTA-PEIa). The device can be switched from the initial OFF state to the ON state under either positive or negative electrical sweep at about ±3.2 V. The ON state is nonvolatile and can maintain the high conducting state even turning off the electrical power and applying a reverse bias. The device fulfills the requirements of a write-once read-many times memory (WORM) with a high ON/OFF current ratio up to 105 and a long retention time in both ON and OFF states. The bistable switching effects of the polymer result from the conformation-coupled charge transfer from electron donors (triazole-substituted triphenylamine moieties) to electron acceptors (phthalimide moieties). By comparing with the memory behaviors of analogue polymers, the functions of ether and imide in the chemical polymer structure on the memory behaviors are discussed.

A general and efficient entry to asymmetric tetrazines for click chemistry applications

The importance of click chemistry is widely recognized. Among all the known click reactions, those involving tetrazines represent the fastest click reactions reported and are generating a great deal of interest. However, there is no efficient entry to asymmetric tetrazines and those with strong electron withdrawing groups, which limits the development of this field. Herein, we report a general and efficient entry to asymmetric tetrazines with strongly electron withdrawing groups.

Bipolar copoly(aryl ether) containing distyrylbenzene, triphenylamine, and 1,2,4-triazole moieties: Synthesis and optoelectronic properties

A novel copoly(aryl ether) (P1) consisting of alternate emitting segments (distyrylbenzene) and a bipolar moiety composed of directly linked electron-transporting aromatic 1,2,4-triazole and hole-transporting triphenylamine was synthesized. The copoly(aryl ether) is readily soluble in common organic solvents and exhibit good thermal stability with thermal decomposition temperature above 450 °C. The emission and the photoluminescence quantum yield of the copolymer are dominated by the emitting segments (distyrylbenzene) with longer emissive wavelength. Electron affinity of P1 is evidently enhanced after introducing the isolated bipolar unit, as confirmed by the lowered lowest unoccupied molecular orbital level (-2.77 eV) relative to P0 without bipolar unit (-2.34 eV). This results in improved emission efficiency of its polymer light-emitting diode (indium tin oxide/poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate)/P1/LiF/Ca/Al) due to more balanced charges injection and transport. Blending P1 with poly(9,9-dihexylfluorene) (PF) further improves the efficiency of the device; the best performance was obtained for PF/P1 = 20/0.8 (w/w) with maximum luminance and maximum luminance efficiency being significantly enhanced to 3260 cd/m2 and 1.08 cd/A, respectively, from 380 cd/m2 and 0.009 cd/A of P1-based device. These results demonstrate that the bipolar moiety can be used to enhance charges injection and transport of electroluminescent polymers.

ORGANOMETALLIC COMPLEX AND LIGHT-EMITTING ELEMENT, LIGHTING DEVICE, AND ELECTRONIC DEVICE INCLUDING THE ORGANOMETALLIC COMPLEX

A first object is to provide an organometallic complex capable of exhibiting phosphorescence. In General Formula (G1), at least one substituent of R11 to R14 represents any of a halogen group, a haloalkyl group having 1 to 4 carbon atoms, and a cyano group. At least one substituent of R15 to R19 represents any of a halogen group, a haloalkyl group having 1 to 4 carbon atoms, and a cyano group. R20 represents any of an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, an aryl group having 6 to 12 carbon atoms, and a heteroaryl group having 4 to 10 carbon atoms. M is either a Group 9 element or a Group 10 element. When M is a Group 9 element, n is 3, and when M is a Group 10 element, n is 2.

Poly(p-phenylenevinylene) derivatives containing electron-transporting aromatic triazole or oxadiazole segments

We report the synthesis, optical and electrochemical details, and properties of copolymers P1-P3 consisting of alternate hole-transporting 1,4-bis(hexyloxy)-2,5-distyrylbenzene (HDB) and electron-transporting 4-(4-(hexyloxy)phenyl)-3,5-diphenyl- 4H-1,2,4-