Category: bromides-buliding-blocks

Rabal, Obdulia; Sanchez-Arias, Juan A.; Cuadrado-Tejedor, Mar; de Miguel, Irene; Perez-Gonzalez, Marta; Garcia-Barroso, Carolina; Ugarte, Ana; Estella-Hermoso de Mendoza, Ander; Saez, Elena; Espelosin, Maria; Ursua, Susana; Tan, Haizhong; Wu, Wei; Xu, Musheng; Garcia-Osta, Ana; Oyarzabal, Julen published the artcile< Design, synthesis, biological evaluation and in vivo testing of dual phosphodiesterase 5 (PDE5) and histone deacetylase 6 (HDAC6)-selective inhibitors for the treatment of Alzheimer's disease>, Recommanded Product: Methyl 4-(bromomethyl)-3-fluorobenzoate, the main research area is phosphodiesterase PDE5 histone deacetylase HDAC6 inhibitor Alzheimer disease; Alzheimer; Dual inhibitors; HDAC6 selective; In-vivo test; PDE5 inhibition; Pharmacological tool compound; Tg2576 mice.

The authors have identified chem. probes that act as dual phosphodiesterase 5 (PDE5) and histone deacetylase 6 (HDAC6)-selective inhibitors (>1 log unit difference vs. class I HDACs) to decipher the contribution of HDAC isoforms to the pos. impact of dual-acting PDE5 and HDAC inhibitors on mouse models of Alzheimer’s disease (AD) and fine-tune this systems therapeutics approach. Structure- and knowledge-based approaches led to the design of first-in-class mols. with the desired target compound profile: dual PDE5 and HDAC6-selective inhibitors. Compound 44b (5-[[4-ethoxy-3-(1-methyl-7-oxo-3-propyl-6H-pyrazolo[4,3-d]pyrimidin-5-yl)phenyl]methyl]thiophene-2-carbohydroxamic acid), which fulfilled the biochem., functional and ADME-Tox profiling requirements and exhibited adequate pharmacokinetic properties, was selected as pharmacol. tool compound and tested in a mouse model of AD (Tg2576) in vivo.

European Journal of Medicinal Chemistry published new progress about Alzheimer disease. 128577-47-9 belongs to class bromides-buliding-blocks, and the molecular formula is C9H8BrFO2, Recommanded Product: Methyl 4-(bromomethyl)-3-fluorobenzoate.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Huang, Wei; Bender, Markus; Seehafer, Kai; Wacker, Irene; Schroeder, Rasmus R.; Bunz, Uwe H. F. published the artcile< Novel Functional TPE Polymers: Aggregation-Induced Emission, pH Response, and Solvatochromic Behavior>, Product Details of C26H18Br2, the main research area is TPE polymer aggregation emission pH solvatochromic behavior; conjugated polymers; fluorescence; modification; selectivity.

Four tetraphenylethylene (TPE)-based aryleneethynylene polymers with amino or nitro groups are reported. They display strong aggregation-induced emission (AIE). The functional groups trigger acidochromic changes in the emission behavior of these polymers. Amino-substituted P1-P3 exhibit pH response through protonation of the amino groups. The position of the amino groups (on TPE or the side chains) influences the fluorescence intensity or emission wavelength as a response to different pH values. Nitro-P4 is solvatochromic due to its donor-acceptor structure. AIE, intramol. charge transfer, and Foerster resonance energy transfer define the fluorescence-based performance of the polymers. The amino-functionalized TPE polymers show excellent nitroarene-sensing performance. P4 is less effective than the amino polymers. A sensor array based on P1-P3 identifies 12 different nitroarenes in water.

Macromolecular Rapid Communications published new progress about Aggregation-induced emission. 184239-35-8 belongs to class bromides-buliding-blocks, and the molecular formula is C26H18Br2, Product Details of C26H18Br2.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Vasu, Amrutham; Naresh, Mameda; Krishna Sai, Gajula; Divya Rohini, Yennamaneni; Murali, Boosa; Ramulamma, Madasu; Ramunaidu, Addipilli; Narender, Nama published the artcile< A heterogeneous catalytic strategy for facile production of benzimidazoles and quinoxalines from primary amines using the Al-MCM-41 catalyst>, COA of Formula: C7H8BrN, the main research area is benzimidazole preparation; quinoxaline preparation; amine phenylenediamine oxidative cross coupling aluminum MCM catalyst.

This study reported a straightforward heterogeneous catalytic (Al-MCM-41) approach to synthesize benzimidazoles I [R = n-Pr, cyclohexyl, Ph, etc.; R1 = H, 5-Me, 5,6-di-Cl, etc.; R2 = H, Bn, CH2CH2Ph] and quinoxalines II [R3 = H, 6-Me, 6-Br, etc.; R4 = H, 4-MeC6H4, 4-ClC6H4, etc.] from primary amines under solvent-free conditions. The Al-MCM-41 catalyst was prepared using a hydrothermal method and characterized by various anal. techniques. The probability and limitations of the catalytic methodol. were presented with various substrates. The catalytic method grants an attractive route to a wide variety of benzimidazole and quinoxaline moieties with good to excellent yields. The gram scale reaction and reusability (up to five cycles) of the Al-MCM-41 catalyst would greatly benefit industrial applications.

Green Chemistry published new progress about Amines Role: RCT (Reactant), RACT (Reactant or Reagent). 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, COA of Formula: C7H8BrN.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Shi, Yusheng; Zhang, Tiexin; Jiang, Xiao-Ming; Xu, Gang; He, Cheng; Duan, Chunying published the artcile< Synergistic photoredox and copper catalysis by diode-like coordination polymer with twisted and polar copper-dye conjugation>, HPLC of Formula: 16426-64-5, the main research area is copper catalysis diode coordination polymer polar dye conjugation.

Synergistic photoredox and copper catalysis confers new synthetic possibilities in the pharmaceutical field, but is seriously affected by the consumptive fluorescence quenching of Cu(II). By decorating bulky auxiliaries into a photoreductive triphenylamine-based ligand to twist the conjugation between the triphenylamine-based ligand and the polar Cu(II)-carboxylate node in the coordination polymer, we report a heterogeneous approach to directly confront this inherent problem. The twisted and polar Cu(II)-dye conjunction endows the coordination polymer with diode-like photoelectronic behaviors, which hampers the inter- and intramol. photoinduced electron transfer from the triphenylamine-moiety to the Cu(II) site and permits reversed-directional ground-state electronic conductivity, rectifying the productive loop circuit for synergising photoredox and copper catalysis in pharmaceutically valuable decarboxylative C(sp3)-heteroatom couplings. The well-retained Cu(II) sites during photoirradiation exhibit unique inner-spheric modulation effects, which endow the couplings with adaptability to different types of nucleophiles and radical precursors under concise reaction conditions, and distinguish the multi-olefinic moieties of biointeresting steride derivatives in their late-stage trifluoromethylation-chloration difunctionalisation.

Nature Communications published new progress about Absorption. 16426-64-5 belongs to class bromides-buliding-blocks, and the molecular formula is C7H4BrNO4, HPLC of Formula: 16426-64-5.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Yang, Tianbao; Lu, Huiai; Qiu, Renhua; Hong, Ling; Yin, Shuang-Feng; Kambe, Nobuaki published the artcile< Photocatalyst-free Synthesis of Indazolones under CO2 Atmosphere>, Safety of 4-Bromobenzylamine, the main research area is indazolone dihydro preparation green chem anticancer activity; amine nitroaryl methanol heterocyclization; anticancer; indazolones; metal-free; photocatalyst-free; synthetic methods.

A convenient photocatalyst-free method for the synthesis of redox-active 1,2-dihydro-3H-indazol-3-one derivatives I (R = benzyl, thiophen-2-ylmethyl, cyclopropylmethyl, iso-Pr, etc.; R1 = H, Br, 3-methylphenyl, 4-methoxyphenyl, naphth-1-yl, furan-3-yl, thiophen-3-yl; R2 = H, Cl) from (2-nitroaryl)methanols 2-O2N-4-R1-5-R2C6H2CH2OH and amines RNH2 was developed. The reaction proceeded efficiently at room temperature by irradiation of UV light under CO2 atmosphere (1.0 atm, flow) without any photocatalysts or additives. This mild, operationally simple method shows wide functional tolerance. The carbamate formed in situ from CO2 and amine is proposed to be the key of this reaction. Some of these compounds synthesized by the present method were found to exhibit high anticancer activities, which can lower the viability of cancerous cell lines such as HeLa, MCF-7 and U87.

Chemistry – An Asian Journal published new progress about Antitumor agents. 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Safety of 4-Bromobenzylamine.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Strekalova, Sofia; Kononov, Alexander; Budnikova, Yulia published the artcile< Amino acids in electrochemical metal-free benzylic C-H amidation>, Recommanded Product: 2,4,6-Trimethylbromobenzene, the main research area is amide preparation; amino acid arene electrochem CH amidation.

This report described the mild electrochem. metal-, oxidant-, additive-free site-selective direct C-H amidation of benzyl C(sp3)-H bonds in an undivided cell using α-amino acids as a source of an amide bond moiety. Practically significant amides RCH2NHC(O)R1 [R = Ph, 3-MeC6H4, 4=BrC6H4; R1 = Me, i-Pr, Ph] were obtained under electrochem. mild one-pot conditions (without strong external oxidants, at room temperature), with total yields up to 73%. This electrochem. approach featured a functional selectivity and a broad scope of substrates with benzyl bond and different amino acids.

Tetrahedron Letters published new progress about Amidation. 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Recommanded Product: 2,4,6-Trimethylbromobenzene.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Ling, Johanne; Bruneau-Voisine, Antoine; Journot, Guillaume; Evano, Gwilherm published the artcile< Copper-Catalyzed Carbonylative Cross-Coupling of Alkyl Iodides and Amines>, SDS of cas: 3959-07-7, the main research area is amide preparation; alkyl iodide amine carbon monoxide carbonylative cross coupling copper; amides; carbon monoxide; carbonylation; copper catalysis; cross-coupling.

A general copper-catalyzed carbonylative cross-coupling between amines and alkyl iodides was reported to form amides RC(O)NR1R2 [R = Cy, i-Pr, CH(Et)2, etc.; R1 = H, Me, R2 = n-hexyl, CH2Bn, t-Bu, etc.]. Using a simple combination of catalytic amounts of copper(I) chloride and N,N,N’;N””,N””-pentamethyldiethylenetriamine in the presence of sodium hydroxide under carbon monoxide pressure, a broad range of alkyl iodides and amines can be efficiently coupled to the corresponding amides that are obtained in good to excellent yields. Notable features of this process were the first one relying on a base metal catalyst, includeed the availability and low cost of the catalytic system, its successful use with primary, secondary, tertiary alkyl iodides and all classes of amines with no or limited competing nucleophilic substitution without CO incorporation as well as its efficiency with complex alkyl iodides and amines. Mechanistic studies demonstrated that a radical pathway is operative and the key role of CO.

Chemistry – A European Journal published new progress about Amides Role: SPN (Synthetic Preparation), PREP (Preparation). 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, SDS of cas: 3959-07-7.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Lathrop, Stephen P.; Rovis, Tomislav published the artcile< Asymmetric Synthesis of Functionalized Cyclopentanones via a Multicatalytic Secondary Amine/N-Heterocyclic Carbene Catalyzed Cascade Sequence>, Formula: C9H7BrO, the main research area is alkyl aryl enal dicarbonyl diketone ketoester secondary amine addition; heterocyclic carbene intramol diastereoselective regioselective enantioselective crossed benzoin; cyclopentanone stereoselective preparation.

A one-pot, asym. multi-catalytic formal [3+2] reaction between 1,3-dicarbonyls and α,β-unsaturated aldehydes is described. The multi-catalytic process involves a secondary amine catalyzed Michael addition followed by a N-heterocyclic carbene catalyzed intramol. crossed benzoin reaction to afford densely functionalized cyclopentanones with high enantioselectivities. The reaction proceeds with a variety of alkyl and aryl enals as well as a range of 1,3-dicarbonyls (diketones and β-ketoesters). The functionalized products are obtained from cheap, readily available starting materials in a rapid and efficient manner in a one-pot, one-step operation.

Journal of the American Chemical Society published new progress about 1,3-Dicarbonyl compounds Role: RCT (Reactant), RACT (Reactant or Reagent). 3893-18-3 belongs to class bromides-buliding-blocks, and the molecular formula is C9H7BrO, Formula: C9H7BrO.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Fier, Patrick S.; Maloney, Kevin M. published the artcile< Direct Conversion of Haloarenes to Phenols under Mild, Transition-Metal-Free Conditions>, Related Products of 81107-97-3, the main research area is phenol preparation nucleophilic aromatic substitution Lossen rearrangement haloarene; hydroxylation electron deficient haloarene heteroarene acetohydroxamic acid.

A high-yielding and practical method for the synthesis of phenols from electron-deficient haloarenes and heteroarenes has been developed. The products are formed from acetohydroxamic acid as the hydroxide source via a novel SNAr reaction/Lossen rearrangement sequence. Notably, these reactions employ inexpensive and air-stable reagents, require no special handling, occur under mildly basic conditions, and form products in high yields in the presence of electrophilic and protic functionality. The utility of this methodol. is demonstrated by the high-yielding hydroxylation of two base-sensitive complex substrates.

Organic Letters published new progress about Aromatic nitrogen heterocycles Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 81107-97-3 belongs to class bromides-buliding-blocks, and the molecular formula is C7H4BrF3O, Related Products of 81107-97-3.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Li, Huiqiong; Feng, Huangdi; Wang, Fang; Huang, Liliang published the artcile< Carboxyl Transfer of α-Keto Acids toward Oxazolidinones via Decarboxylation/Fixation of Liberated CO2>, Safety of 4-Bromobenzylamine, the main research area is copper catalyst carboxyl transfer alpha keto acid decarboxylation fixation; liberated carbon dioxide decarboxylation; oxazolidinone preparation.

A novel strategy for the direct carboxyl transfer involving a decarboxylative A3 reaction of α-keto acids, primary amines, and alkynes has been developed under a Cu(I)/Cu(II) binary catalysis system. This multicomponent reaction provides a facile and efficient approach for the production of a diverse range of 2-oxazolidinones in moderate to excellent yields through a one-pot CO2 elimination-fixation procedure. The conciseness of the “”CO2 recycling”” process makes this ideal synthesis superior over classical CO2 utilization.

Journal of Organic Chemistry published new progress about Alkynes, α- Role: RCT (Reactant), RACT (Reactant or Reagent). 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Safety of 4-Bromobenzylamine.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary