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3-Bromo-N'-hydroxybenzenecarboximide is an amide derivative that features a bromine atom and a hydroxyl group attached to a benzene ring. This chemical compound serves as a versatile building block in the creation of new substances due to its chemical properties, making it suitable for a range of applications in the production of pharmaceuticals and other chemical products.

1643440-91-8

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1643440-91-8 Usage

Uses

Used in Pharmaceutical Industry:
3-Bromo-N'-hydroxybenzenecarboximide is used as a key intermediate in the synthesis of pharmaceutical drugs. Its unique structure allows it to react with other compounds, facilitating the development of a variety of medicinal products.
Used in Agrochemical Industry:
3-BROMO-N'-HYDROXYBENZENECARBOXIMIDAMIDE also finds application in the agrochemical sector, where it is utilized in the synthesis of agrochemicals. Its reactivity and structural features make it a valuable component in creating effective products for agricultural use.
Used in Organic Synthesis:
3-Bromo-N'-hydroxybenzenecarboximide is used as an intermediate in organic synthesis. Its ability to form a variety of products through reactions with other compounds makes it a useful substance in the creation of new chemical entities for diverse applications.

Check Digit Verification of cas no

The CAS Registry Mumber 1643440-91-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,4,3,4,4 and 0 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1643440-91:
(9*1)+(8*6)+(7*4)+(6*3)+(5*4)+(4*4)+(3*0)+(2*9)+(1*1)=158
158 % 10 = 8
So 1643440-91-8 is a valid CAS Registry Number.

1643440-91-8Relevant academic research and scientific papers

An efficient one-pot synthesis of 3-aryl-5-(dialkoxymethyl)-1,2,4-oxadiazoles under solvent-free conditions

Adib, Mehdi,Saeedi, Sara,Soheilizad, Mehdi,Bayanati, Maryam,Tajbakhsh, Mahmood,Amanlou, Massoud

, p. 314 - 317 (2016)

An efficient and simple synthesis of 3-aryl-5-(dialkoxymethyl)-1,2,4-oxadiazoles is described. The in situ prepared amidoximes from the reaction between nitriles and hydroxylamine are condensed with alkyl 2,2-dialkoxyacetates under solvent-free conditions

Imidazole hydrochloride promoted synthesis of 3,5-disubstituted-1,2,4-oxadiazoles

Wang, Xuetong,Wang, Yin,Liu, Xiaoling,He, Tingshu,Li, Lingli,Wu, Huili,Zhou, Shangjun,Li, Dan,Liao, Siwei,Xu, Ping,Huang, Xing,Yuan, Jianyong

supporting information, (2021/10/14)

Imidazole hydrochloride as an additive promotes the reaction of amidoximes and DMA derivatives to generated 3,5-disubstituted-1,2,4-oxadiazoles in low to excellent yields without the use of coupling reagents, oxidants, strong acids or bases and other additives.

SO2F2-Mediated one-pot cascade process for transformation of aldehydes (RCHO) to cyanamides (RNHCN)

Ding, Chengrong,Ge, Shuting,Wei, Junjie,Zhang, Guofu,Zhao, Yiyong

, p. 17288 - 17292 (2020/05/18)

A simple, mild and practical cascade process for the direct conversion of aldehydes to cyanamides was developed featuring a wide substrate scope and great functional group tolerability. This method allows for transformations of readily available, inexpensive, and abundant aldehydes to highly valuable cyanamides in a pot, atom, and step-economical manner with a green nitrogen source. This protocol will serve as a robust tool for the installation of the cyanamide moiety in various complicated molecules.

KCNT1 INHIBITORS AND METHODS OF USE

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Paragraph 000649, (2020/11/23)

The present invention is directed to, in part, compounds and compositions useful for preventing and/or treating a neurological disease or disorder, a disease or condition relating to excessive neuronal excitability, and/or a gain-of-function mutation in a gene (e.g., KCNT1). Methods of treating a neurological disease or disorder, a disease or condition relating to excessive neuronal excitability, and/or a gain-of-function mutation in a gene such as KCNT1 are also provided herein.

1-CYANO-PYRROLIDINE DERIVATIVES AS DUB INHIBITORS

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Paragraph 0955-0956, (2020/11/30)

The present invention relates to novel compounds and methods for the manufacture of inhibitors of deubiquitylating enzymes (DUBs). In particular, the invention relates to the inhibition of ubiquitin C-terminal hydrolase 30 or ubiquitin specific peptidase 30 (USP30). The novel compounds have formula (I): (Formula (I)) or are pharmaceutically acceptable salts thereof, wherein: R1a, R1b, R1c, R1d, R1e and R1f each independently represent hydrogen, optionally substituted C1-C6 alkyl or optionally substituted C3-C4 cycloalkyl, or R1b and R1c together form an optionally substituted C3-C6 cycloalkyl ring, or R1d and R1e together form an optionally substituted C3-C6 cycloalkyl ring; R2 represents hydrogen or optionally substituted C1-C6 alkyl; A represents an optionally further substituted 5 to 10 membered monocyclic or bicyclic heteroaryl, heterocyclyl or aryl ring; L represents a covalent bond or linker; B represents an optionally substituted 3 to 10 membered monocyclic or bicyclic heterocyclyl, heteroaryl, cycloalkyl or aryl ring; and when -A-L-B is at position x attachment to A is via a carbon ring atom of A, and either: A cannot be triazolopyridazinyl, triazolopyridinyl, imidazotriazinyl, imidazopyrazinyl or pyrrolopyrimidinyl; or B cannot be substituted with phenoxyl; or B cannot be cyclopentyl when L is an oxygen atom.

A cascade process for directly converting nitriles (RCN) to cyanamides (RNHCN) via SO2F2-activated Tiemann rearrangement

Zhang, Guofu,Zhao, Yiyong,Ding, Chengrong

supporting information, p. 7684 - 7688 (2019/08/30)

A simple, mild and practical process for the direct conversion of nitriles to cyanamides was newly discovered and exhibited a wide substrate scope as well as great functional group-tolerability (36 examples). In this efficient strategy, the in situ generated amidoximes obtained from the reaction of nitriles with hydroxylamine subsequently underwent Tiemann rearrangement, producing the corresponding cyanamides with great isolated yields under SO2F2. Additionally, the control experiments reportedly shed light on the tentative mechanism involved in the formation and elimination of the key intermediate: a sulfonyl ester.

Novel 5-(quinuclidin-3-ylmethyl)-1,2,4-oxadiazoles to investigate the activation of the α7 nicotinic acetylcholine receptor subtype: Synthesis and electrophysiological evaluation

Quadri, Marta,Silnovi?, Almin,Matera, Carlo,Horenstein, Nicole A.,Stokes, Clare,De Amici, Marco,Papke, Roger L.,Dallanoce, Clelia

, p. 207 - 228 (2018/10/23)

α7 nicotinic acetylcholine receptors (nAChRs) are relevant therapeutic targets for a variety of disorders including neurodegeneration, cognitive impairment, and inflammation. Although traditionally identified as an ionotropic receptor, the α7 subtype showed metabotropic-like functions, mainly linked to the modulation of immune responses. In the present work, we investigated the structure-activity relationships in a set of novel α7 ligands incorporating the 5-(quinuclidin-3-ylmethyl)-1,2,4-oxadiazole scaffold, i.e. derivatives 21a-34a and 21b-34b, aiming to identify the structural requirements able to preferentially trigger one of the two activation modes of this receptor subtype. The new compounds were characterized as partial and silent α7 nAChR agonists in electrophysiological assays, which allowed to assess the contribution of the different groups towards the final pharmacological profile. Overall, modifications of the selected structural backbone mainly afforded partial agonists, among them tertiary bases 27a-33a, whereas additional hydrogen-bond acceptor groups in permanently charged ligands, such as 29b and 31b, favored a silent desensitizing profile at the α7 nAChR.

Pharmacophore requirements for HIV-1 reverse transcriptase inhibitors that selectively “Freeze” the pre-translocated complex during the polymerization catalytic cycle

Lacbay, Cyrus M.,Menni, Michael,Bernatchez, Jean A.,G?tte, Matthias,Tsantrizos, Youla S.

, p. 1713 - 1726 (2018/02/27)

Reverse transcriptase (RT) is responsible for replicating the HIV-1 genome and is a validated therapeutic target for the treatment of HIV infections. During each cycle of the RT-catalyzed DNA polymerization process, inorganic pyrophosphate is released as the by-product of nucleotide incorporation. Small molecules were identified that act as bioisosteres of pyrophosphate and can selectively freeze the catalytic cycle of HIV-1 RT at the pre-translocated stage of the DNA- or RNA-template-primer-enzyme complex.

Focused microwave irradiation-assisted synthesis of N-cyclohexyl-1,2,4-oxadiazole derivatives with antitumor activity

de Oliveira, Valentina Nascimento Melo,dos Santos, Franciane Gon?alves,Ferreira, Vanessa Pinheiro Gon?alves,Araújo, Héverton Mendes,do ó Pessoa, Cláudia,Nicolete, Roberto,de Oliveira, Ronaldo Nascimento

, p. 2522 - 2532 (2018/10/15)

A facile synthesis of 3,5-disubstituted 1,2,4-oxadiazole derivatives under focused microwave irradiation (FMWI) is reported. Arylamidoximes 1a–i and dicyclohexylcarbodiimide (DCC) were carried out in DMF under FMWI to obtain 1,2,4-oxadiazoles 2a–i in 61–8

Synthesis, characterisation and photophysical studies of oxadiazolyl coumarin: A new class of blue light emitting fluorescent dyes

Matta, Akanksha,Bahadur, Vijay,Taniike, Toshiaki,Van der Eycken, Johan,Singh, Brajendra K.

, p. 250 - 260 (2017/02/05)

A library of novel 1, 2, 4-oxadiazole linked coumarin dyes have been synthesised via condensation of corresponding acid 6 and N’-hydroxybenzimidamide 8. This new class of organic compounds were examined for their fluorescent properties and found to emit blue light in the visible region of the spectrum with very high Stoke's shift values. Most of these compounds demonstrated high quantum yields and fluorescence life time in nano-second range which makes them quite lucrative to be used as new fluorescent probes. The highest quantum yield of 0.68 was shown by compound 9j which also shows high Stoke's shift value. The electronic structure of these coumarin-based donor–π–acceptor (D–π–A)-type organic dyes have been examined by Density Functional Theory (DFT). TGA analysis of few of the compounds show that they are stable up to temperature range of 0–245?°C. The synthesised compounds were characterised by NMR and mass spectrometry and the structure of two of these compounds have been confirmed by X-ray crystallography.

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