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Usage

Uses

Used in Chemical Synthesis:
4,7-Dibromo-1H-indole-2,3-dione is used as a key intermediate in the synthesis of conjugated thiophene-fused isatin dyes. Its unique structure allows for intramolecular direct arylation, which is a valuable reaction in the formation of these dyes.
Used in Pharmaceutical Industry:
In the pharmaceutical industry, 4,7-Dibromo-1H-indole-2,3-dione may be utilized as a building block for the development of novel therapeutic agents. Its chemical properties and reactivity make it a promising candidate for the creation of new drugs with potential applications in various medical fields.
Used in Dye and Pigment Industry:
4,7-Dibromo-1H-indole-2,3-dione can be employed as a starting material for the production of conjugated thiophene-fused isatin dyes, which are known for their vibrant colors and stability. These dyes can be used in various applications, such as in the textile industry, printing, and painting.
Used in Research and Development:
Due to its unique chemical structure, 4,7-Dibromo-1H-indole-2,3-dione can be a valuable compound for research purposes. It can be used in the study of various chemical reactions, such as intramolecular direct arylation, and may also serve as a model compound for understanding the properties and behavior of similar molecules.

Upstream product

• 3638-73-1 2,5-dibromoaniline 
• 529502-68-9 N-(2,5-dibromophenyl)-2-(N-hydroxyimino)acetamide 

Downstream Products

• 20776-66-3 2-amino-3,6-dibromobenzoic acid 

Relevant academic research and scientific papers

GRAPHENE NANO RIBBON PRECURSOR AND METHOD FOR PRODUCING GRAPHENE NANO RIBBON

PROBLEM TO BE SOLVED: To provide a graphene nanoribbon precursor that allows for stably producing a graphene nanoribbon whose edge structure is of armchair type and whose edge hydrogen is replaced with fluorine, and to provide a method for producing a gra

Chemical Vapor Deposition Synthesis and Terahertz Photoconductivity of Low-Band-Gap N = 9 Armchair Graphene Nanoribbons

Recent advances in bottom-up synthesis of atomically defined graphene nanoribbons (GNRs) with various microstructures and properties have demonstrated their promise in electronic and optoelectronic devices. Here we synthesized N = 9 armchair graphene nanoribbons (9-AGNRs) with a low optical band gap of ～1.0 eV and extended absorption into the infrared range by an efficient chemical vapor deposition process. Time-resolved terahertz spectroscopy was employed to characterize the photoconductivity in 9-AGNRs and revealed their high intrinsic charge-carrier mobility of approximately 350 cm2·V-1·s-1

Production of [pisen[pisen] and derivatives thereof

PROBLEM TO BE SOLVED: To provide a method of producing a picene and a derivative thereof suitable for uses of organic semiconductors, thin film transistors, field effect transistors or solar batteries or the like, in a short reaction process with high yield.SOLUTION: A method of producing a picene of formula 8 and a derivative thereof includes, as represented compounds and steps, a step 1 to subject a compound of formula 5 and a compound of formula 6 to a coupling reaction for producing a compound of formula 7, and a step 2 to subject the compound of formula 7 to dehydrohalogenation.

Conjugated Thiophene-Fused Isatin Dyes through Intramolecular Direct Arylation

We report on the design, synthesis, and properties of innovative, planar, π-conjugated compounds in which a thiophene ring is fused with the skeleton of the naturally occurring dye isatin. The synthesis is achieved in high yields making use of an intramolecular direct arylation reaction as the key step, making the overall process potentially scalable. The synthetic sequence has been demonstrated also for an isatin bearing fluorine substituents on the aromatic ring. NMR and X-ray studies demonstrate the crosstalk occurring between the fused, coplanar, and conjugated moieties, making these novel dyes with a donor-acceptor character. Cyclic voltammetry and UV-vis studies confirm very interesting HOMO-LUMO levels and energy gaps for the new compounds.

ORTHO-TERPHENYLS FOR THE PREPARATION OF GRAPHENE NANORIBBONS

The present invention concerns ortho-Terphenyls of general formula (I); wherein R1, R2, R3 and R4 are independently selected from the group consisting of H; CN; NO2; and saturated, unsaturated or aromatic C1-C40 hydrocarbon residues, which can be substituted 1 - to 5- fold with F, CI, OH, NH2, CN and/or NO2, and wherein one or more -CH2-groups can be replaced by -O-, -NH-, -S-, -C(=O)O-, -OC(=O)- and/or -C(=O)-; and X and Y are the same or different, and selected from the group consisting of F, CI, Br, I, and OTf (trifluoromethanesulfonate); and their use for the preparation of graphene nanoribbons as well as a process for the preparation of graphene nanoribbons from said ortho-Terphenyls.

An alkyne metathesis-based route to ortho-dehydrobenzannulenes

An application of alkyne metathesis to 1,2-di(prop-1-ynyl)arenes, producing dehydrobenzannulenes, is described. An efficient method for selective Sonogashira couplings of bromoiodoarenes under conditions of microwave irradiation is also reported.