121073-91-4

Upstream product

• 591-50-4 iodobenzene 
• 3077-85-8 3-Nitro-carbazol 
• 855178-38-0 2-(3-nitro-carbazol-9-yl)-isophthalic acid 
• 1150-62-5 N-phenylcarbazole 
• 7697-37-2 nitric acid 
• 98-95-3 nitrobenzene 
• 66131-43-9 2-carbazol-9-yl-isophthalic acid 
• 86-74-8 9H-carbazole 
• 100-01-6 4-nitro-aniline 

Downstream Products

• 1454710-81-6 C₃₆H₃₀N₂O₂S₂ 

Relevant academic research and scientific papers

Diarylation of N- and O-nucleophiles through a metal-free cascade reaction

The arylation of heteroatom nucleophiles is a central strategy to reach diarylated compounds that are key building blocks in agrochemicals, materials, and pharmaceuticals. Nucleophilic aromatic substitution is a classical tool for such arylations, and recent developments in hypervalent iodine-mediated arylations allow a wider scope of products. Herein, we combine the benefits of these strategies to enable an efficient and transition-metal-free difunctionalization of N- and O-nucleophiles with two structurally different aryl groups and to provide di- and triarylamines and diaryl ethers in one single step (>100 examples). The core of this strategy is the unique reactivity discovered with specifically designed fluorinated diaryliodonium salts, which unveils novel reaction pathways in hypervalent iodine chemistry. The methodology is suitable for diarylation of aliphatic amines, anilines, ammonia, and even water. It tolerates a wide variety of functional and protecting groups, with the retained iodine substituent easily accessible for derivatization of the products.

COMPOUND AND ORGANIC LIGHT EMITTING DEVICE COMPRISING THE SAME

The present invention provides a compound of chemical formula 1 and an organic light emitting device comprising the same. The compound according to the present invention has excellent electrochemical and thermal stability, thereby having excellent lifespan characteristics.COPYRIGHT KIPO 2019

Carbazole derivative, preparation method, and application thereof

The invention provides a carbazole derivative, a preparation method, and an application thereof, and relates to the technical field of organic photoelectric materials. Through introduction of a condensed-ring rigid and dense structure, the carbazole deriv

Carbazole N-substituent effect upon DTMA: Stabilizing and photochromic modulating

Dithienylmaleimide derivatives 7-27 were synthesized by introducing N-substituted carbazole for photo-stabilizing purpose, and the structures were fully confirmed. The photochromism and photo-stability were recorded via UV-vis spectra. Only ortho compounds 8-17 with N-substituents on carbazole moiety showed escalated photochromic change, while compound 7 and the para counterparts 18-27 showed no appreciable photochromism. Additionally, compounds 8-18 exhibited good photo-stability except 17 under 254 nm irradiation. The unstability of 17 may probably due to overrunning hindrance. These photochromic patterns indicated that hindrance and electronic effect mutually paid a decisive influence on the photochromism and photo-stability, which potentially exploited a new way to construct novel photochromic materials with regulable and conceivable performance.

Palladium Acetate-Mediated Cyclizations of Di- and Trifunctional Triarylamines, Diaryl Ethers, and Diaryl Ketones

Triphenylamine and its 4,(4',4")-substituted nitro or ester and methyl derivatives are cyclodehydrogenated to the corresponding carbazole derivatives 4a-d with Pd(OAc)2 in acetic acid.Further cyclizations can not be observed.Multiple cyclizations of this kind, however, can be realized with compounds of the 1,4-diphenoxybenzene (6a), 1,4-dibenzoylbenzene (6b), and 2,8-diphenoxydibenzofuran type (10), where in a very simple manner benzobisbenzofurans 8a, 9a, indenofluorene-6,12-dione (8b), 11H-fluorenobenzofuran-11-one (8c), and bisbenzofurodibenzofuran (12) become accessible.