Tag: M.W:200-300

So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Calderon, J. L.; Cotton, F. A.; Shaver, Alan researched the compound: Potassiumtris(1-pyrazolyl)borohydride( cas:18583-60-3 ).Electric Literature of C9H10BKN6.They published the article 《Complexes of polypyrazolylborate ligands. II. Conformational isomerism in [hydridotris(1-pyrazolyl)borate] (h5-cyclopentadienyl)dicarbonylmolybdenum and [diethylbis(1-pyrazolyl)borate] (h5-cyclopentadienyl)dicarbonylmolybdenum》 about this compound( cas:18583-60-3 ) in Journal of Organometallic Chemistry. Keywords: pyrazolylborate cyclopentadienyl molybdenum carbonyl; borate cyclopentadienyl molybdenum carbonyl; PMR cyclopentadienylmolybdenum conformation; IR cyclopentadienylmolybdenum conformation. We’ll tell you more about this compound (cas:18583-60-3).

In this abstract C5H5 = h5-cyclopentadienyl. Structural studies of [HB(pz)3](C5H5)(CO)2Mo and [Et2B(pz)2](C5H5)(CO)2Mo, where HB(pz)3 and Et2B(pz)2 represent the hydridotris(pyrazolyl)borate and the diethylbis(pyrazolyl)borate groups, resp., are carried out in solution using ir and PMR spectra. The data indicate that the pyrazolyl groups coordinate as bidentate ligands to form 6-membered rings and that the rings exist in 2 conformations which interconvert in solution, which explains the temperature dependence of the PMR spectrum of [B(pz)4](C5H5)(CO)2Mo.

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Reference:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics

Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 16004-15-2, is researched, Molecular C7H6BrI, about The Heck reaction of allylic alcohols catalysed by an N-heterocyclic carbene-Pd(II) complex and toxicity of the ligand precursor for the marine benthic copepod Amphiascoides atopus, the main research direction is aryl bromide allylic alc triazolylidene palladium catalyst Heck reaction; alkyl aryl carboxilate preparation.Formula: C7H6BrI.

The palladium-catalyzed reaction of aryl halides and allylic alcs. was an attractive method for obtaining α,β-unsaturated aldehydes and ketones, which represent key intermediates in organic synthesis. In this context, a 1,2,3-triazol-5-ylidene (aNHC)-based palladium(II) complex formed in situ was found to be a selective catalyst for the syntheses of building blocks from the corresponding aryl halides and allylic alcs., with yields ranging from 50% to 90%. The lack of toxic effects of the ligand precursor (1,2,3-triazolium salt) of the palladium(II) complex for the harpacticoid copepod Amphiascoides atopus allowed to contrast the efficiency of the catalytic system with the potential impact of the principal waste chem. in global aquatic ecosystems, which has not been previously addressed.

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Reference:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 1-(Bromomethyl)-4-iodobenzene, is researched, Molecular C7H6BrI, CAS is 16004-15-2, about Iodinated Polyesters with Enhanced X-ray Contrast Properties for Biomedical Imaging, the main research direction is polylactic acid X ray contrast property FTIR spectroscopy.Product Details of 16004-15-2.

Abstract: Synthetic materials exhibiting contrast imaging properties have become vital to the field of biomedical imaging. However, polymeric biomaterials are lacking imaging contrast properties for deep tissue imaging. This report details the synthesis and characterization of a suite of aryl-iodo monomers, which were used to prepare iodinated polyesters using a pre-functionalization approach. Com. available 4-iodo-phenylalanine or 4-iodobenzyl bromide served as the starting materials for the synthesis of three iodinated monomeric moieties (a modified lactide, morpholine-2,5-dione, and caprolactone), which under a tin-mediated ring-opening polymerization (ROP), generated their resp. polyesters (PE) or poly(ester amides) (PEA). An increase in X-ray intensity of all synthesized iodine-containing polymers, in comparison to non-iodinated poly(lactic acid) (PLA), validated their functionality as radio-opaque materials. The iodinated-poly(lactic acid) (iPLA) material was visualized through varying thicknesses of chicken tissue, thus demonstrating its potenial as a radio-opaque biomaterial.

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Reference:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Article, Journal of Enzyme Inhibition and Medicinal Chemistry called Synthesis and evaluation of a large library of nitroxoline derivatives as pancreatic cancer antiproliferative agents, Author is Veschi, Serena; Carradori, Simone; De Lellis, Laura; Florio, Rosalba; Brocco, Davide; Secci, Daniela; Guglielmi, Paolo; Spano, Mattia; Sobolev, Anatoly P.; Cama, Alessandro, which mentions a compound: 16004-15-2, SMILESS is IC1=CC=C(CBr)C=C1, Molecular C7H6BrI, Quality Control of 1-(Bromomethyl)-4-iodobenzene.

Pancreatic cancer (PC) is one of the deadliest carcinomas and in most cases, which are diagnosed with locally advanced or metastatic disease, current therapeutic options are highly unsatisfactory. Based on the anti-proliferative effects shown by nitroxoline, an old urinary antibacterial agent, we explored a large library of newly synthesized derivatives to unravel the importance of the OH moiety and pyridine ring of the parent compound The new derivatives showed a valuable anti-proliferative effect and some displayed a greater effect as compared to nitroxoline against three pancreatic cancer cell lines with different genetic profiles. In particular, in silico pharmacokinetic data, clonogenicity assays and selectivity indexes of the most promising compounds showed several advantages for such derivatives, as compared to nitroxoline. Moreover, some of these novel compounds had stronger effects on cell viability and/or clonogenic capacity in PC cells as compared to erlotinib, a targeted agent approved for PC treatment.

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Reference:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics

Electric Literature of C9H10BKN6. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: Potassiumtris(1-pyrazolyl)borohydride, is researched, Molecular C9H10BKN6, CAS is 18583-60-3, about Linkage isomerism in a face-centered cubic Cu6Cr8(CN)24 cluster with an S = 15 ground state. Author is Harris, T. David; Long, Jeffrey R..

Access to [TpCr(CN)3]- (Tp = hydrotris(pyrazol-1-yl)borate) enables isolation of two metastable linkage isomers of a fcc. cluster, [Tp8(H2O)6Cu6Cr8(CN)24]4+, both exhibiting an S = 15 ground state. X-ray crystal structures of precursor (Bu4N)[TpCr(CN)3], of [Tp8(H2O)6Cu6Cr8(CN)24](ClO4)4 with partially isomerized bridging cyano ligands (Cr-CN-Cu and Cr-NC-Cu), and of the cluster with only Cr-CN-Cu linkages are presented.

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Reference:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics

HPLC of Formula: 97966-01-3. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 2,3-Dichloro-5-iodopyridine, is researched, Molecular C5H2Cl2IN, CAS is 97966-01-3, about Synthesis of 2, 3-dichloro-5-iodopyridine. Author is Chai, Huifang; Zeng, Xiaoping; Teng, Minggang; Duan, Lian.

In the paper, we introduced a approach to synthesize the title compound, was realized and manufactured from 2, 3-dichloropyridine via four steps. Its structure was verified by MS and 1H NMR. This synthetic route has the advantages of convenient operation and mild reaction conditions. The total product yield was 51%. This program is suitable for industrial production

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Reference:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics

Related Products of 599183-36-5. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 3-Iodo-1H-indazol-5-amine, is researched, Molecular C7H6IN3, CAS is 599183-36-5, about Identification of 3-sulfonylindazole derivatives as potent and selective 5-HT6 antagonists. Author is Liu, Kevin G.; Robichaud, Albert J.; Greenfield, Alexander A.; Lo, Jennifer R.; Grosanu, Cristina; Mattes, James F.; Cai, Yanxuan; Zhang, Guo Ming; Zhang, Jean Y.; Kowal, Dianne M.; Smith, Deborah L.; Di, Li; Kerns, Edward H.; Schechter, Lee E.; Comery, Thomas A..

As part of our efforts to develop agents for cognitive enhancement, we have been focused on the 5-HT6 receptor in order to identify potent and selective ligands for this purpose. Herein we report the identification of a novel series of 3-sulfonylindazole derivatives with acyclic amino side chains as potent and selective 5-HT6 antagonists. The synthesis and detailed SAR of this class of compounds are reported.

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Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics

COA of Formula: C7H6BrI. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 1-(Bromomethyl)-4-iodobenzene, is researched, Molecular C7H6BrI, CAS is 16004-15-2, about Multicomponent click reaction catalyzed by organic surfactant-free copper sulfide (sf-CuS) nano/micro flowers.

The copper sulfide (sf-CuS) nano/micro particles without having organic surfactant mols. as the capping agent is synthesized. These particles with a flower-like architecture (micro flowers, mf) were obtained readily under the supersaturated condition at room temperature In these particles, the surface was freely available for adsorption and desorption reactions. When utilized as a catalyst in multicomponent cycloaddition reactions, the sf-CuS mf exhibited excellent catalytic activity compared with some other nanoparticles with surfactants. This sf-CuS mf catalyzed the one-pot synthesis of 1,2,3-triazole and β-hydroxy-1,2,3-triazole effectively from a variety of benzyl bromide derivatives and epoxides resp. Both these reactions proceeded in the presence of azide and phenylacetylene in the water at room temperature The catalyst was reusable, and there was no catalyst leaching observed during reactions. Synthesis of β-hydroxy triazoles and 1,2,3-triazoles under exceptionally mild conditions with high yields proved the sf-CuS mf as the robust and recyclable catalyst.

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Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics

So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Donzel, Maxime; Elhabiri, Mourad; Davioud-Charvet, Elisabeth researched the compound: 1-(Bromomethyl)-4-iodobenzene( cas:16004-15-2 ).SDS of cas: 16004-15-2.They published the article 《Bioinspired Photoredox Benzylation of Quinones》 about this compound( cas:16004-15-2 ) in Journal of Organic Chemistry. Keywords: benzylmenadione preparation; naphthoquinone bioinspired photoredox benzylation iron catalyst. We’ll tell you more about this compound (cas:16004-15-2).

3-Benzylmenadiones were obtained in good yield by using a blue-light-induced photoredox process in the presence of Fe(III), oxygen, and γ-terpinene acting as a hydrogen-atom transfer agent. This methodol. is compatible with a wide variety of diversely substituted 1,4-naphthoquinones as well as various cheap, readily available benzyl bromides with excellent functional group tolerance. The benzylation mechanism was investigated and supports a three-step radical cascade with the key involvement of the photogenerated superoxide anion radical.

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Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics

Wu, Dan; Hao, Wen-Juan; Rao, Qian; Lu, Yi; Tu, Shu-Jiang; Jiang, Bo published an article about the compound: 1-(Bromomethyl)-4-iodobenzene( cas:16004-15-2,SMILESS:IC1=CC=C(CBr)C=C1 ).SDS of cas: 16004-15-2. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:16004-15-2) through the article.

A new and general photocatalytic Kharasch-type addition/1,5-(SN”)-substitution cascade of 1,7-diynes with alkyl halides such as BrCCl3 and CBr4 was reported for the first time, and used to produce 65 hitherto unreported β-gem-dihalovinyl ketones/aldehydes with moderate to excellent yields in a highly regioselective manner. This reaction tolerates a wide scope of substrates, which offers a green and efficient entry to fabricate synthetically important β-gem-dihalovinyl carbonyl scaffolds. Notably, the late-stage application of these resulting β-gem-dihalovinyl carbonyls shows high and unique reactivity profiles and demonstrates the versatility of their derivatization. Thus, e.g., treatment of diyne I with CBrCl3 under blue irradiation in presence of fac-Ir(ppy)3 and NaOAc base in EtOH afforded II (80%).

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Reference:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics